diff --git a/src/app/App.js b/src/app/App.js
index 4d6998b..bbcdfd0 100644
--- a/src/app/App.js
+++ b/src/app/App.js
@@ -1,7 +1,7 @@
 import React from "react";
 import { ApolloProvider } from "@apollo/client";
 import { CSSReset, ChakraProvider } from "@chakra-ui/core";
-import theme from "@chakra-ui/theme";
+import defaultTheme from "@chakra-ui/theme";
 import { BrowserRouter as Router, Switch, Route } from "react-router-dom";
 import loadable from "@loadable/component";
 
@@ -10,6 +10,19 @@ import apolloClient from "./apolloClient";
 const WardrobePage = loadable(() => import("./WardrobePage"));
 const HomePage = loadable(() => import("./HomePage"));
 
+const theme = {
+  ...defaultTheme,
+  styles: {
+    ...defaultTheme.styles,
+    global: ({ colorMode, ...rest }) => ({
+      ...defaultTheme.styles.global({ colorMode, ...rest }),
+      color: colorMode === "light" ? "green.800" : "green.50",
+    }),
+  },
+};
+
+console.log(defaultTheme.styles.global, defaultTheme.styles);
+
 /**
  * App is the entry point of our application. There's not a ton of exciting
  * stuff happening here, mostly just setting up some globals and theming!
diff --git a/src/app/HomePage.js b/src/app/HomePage.js
index dd14065..cb4eb7c 100644
--- a/src/app/HomePage.js
+++ b/src/app/HomePage.js
@@ -1,7 +1,18 @@
 import React from "react";
 import { css } from "emotion";
 import gql from "graphql-tag";
-import { Box, Button, Flex, Input, useTheme, useToast } from "@chakra-ui/core";
+import {
+  Box,
+  Button,
+  Flex,
+  IconButton,
+  Input,
+  useColorMode,
+  useColorModeValue,
+  useTheme,
+  useToast,
+} from "@chakra-ui/core";
+import { MoonIcon, SunIcon } from "@chakra-ui/icons";
 import { useHistory, useLocation } from "react-router-dom";
 import { useLazyQuery } from "@apollo/client";
 
@@ -19,13 +30,8 @@ function HomePage() {
   const [previewState, setPreviewState] = React.useState(null);
 
   return (
-    <Flex
-      color="green.800"
-      direction="column"
-      p="6"
-      align="center"
-      textAlign="center"
-    >
+    <Flex direction="column" p="6" align="center" textAlign="center">
+      <ColorModeToggleButton />
       <Box height="8" />
       <Box
         width="200px"
@@ -93,6 +99,9 @@ function StartOutfitForm({ onChange }) {
     history.push(`/outfits/new?${params}`);
   };
 
+  const buttonBgColor = useColorModeValue("green.600", "green.300");
+  const buttonBgColorHover = useColorModeValue("green.700", "green.200");
+
   return (
     <form onSubmit={onSubmit}>
       <Flex>
@@ -121,8 +130,8 @@ function StartOutfitForm({ onChange }) {
           type="submit"
           colorScheme="green"
           disabled={!isValid}
-          backgroundColor="green.600" // for AA contrast
-          _hover={{ backgroundColor: "green.700" }}
+          backgroundColor={buttonBgColor}
+          _hover={{ backgroundColor: buttonBgColorHover }}
         >
           Start
         </Button>
@@ -192,6 +201,11 @@ function SubmitPetForm() {
     import("./WardrobePage");
   };
 
+  const inputBorderColor = useColorModeValue("green.600", "green.500");
+  const inputBorderColorHover = useColorModeValue("green.400", "green.300");
+  const buttonBgColor = useColorModeValue("green.600", "green.300");
+  const buttonBgColorHover = useColorModeValue("green.700", "green.200");
+
   return (
     <form onSubmit={onSubmit}>
       <Flex>
@@ -201,8 +215,8 @@ function SubmitPetForm() {
           isDisabled={loading}
           placeholder="Enter a pet's name"
           aria-label="Enter a pet's name"
-          borderColor="green.600"
-          _hover={{ borderColor: "green.400" }}
+          borderColor={inputBorderColor}
+          _hover={{ borderColor: inputBorderColorHover }}
           boxShadow="md"
           width="14em"
           className={css`
@@ -217,8 +231,8 @@ function SubmitPetForm() {
           colorScheme="green"
           isDisabled={!petName}
           isLoading={loading}
-          backgroundColor="green.600" // for AA contrast
-          _hover={{ backgroundColor: "green.700" }}
+          backgroundColor={buttonBgColor} // for AA contrast
+          _hover={{ backgroundColor: buttonBgColorHover }}
         >
           Start
         </Button>
@@ -227,6 +241,21 @@ function SubmitPetForm() {
   );
 }
 
+function ColorModeToggleButton() {
+  const { colorMode, toggleColorMode } = useColorMode();
+
+  return (
+    <IconButton
+      icon={colorMode === "light" ? <MoonIcon /> : <SunIcon />}
+      onClick={toggleColorMode}
+      variant="ghost"
+      position="absolute"
+      bottom="3"
+      right="3"
+    />
+  );
+}
+
 /**
  * useSupportSetup helps our support staff get set up with special access.
  * If you provide ?supportSecret=... in the URL, we'll save it in a cookie and
diff --git a/src/app/WardrobePage/Item.js b/src/app/WardrobePage/Item.js
index 1940be2..3e8a08c 100644
--- a/src/app/WardrobePage/Item.js
+++ b/src/app/WardrobePage/Item.js
@@ -7,6 +7,7 @@ import {
   Image,
   Skeleton,
   Tooltip,
+  useColorModeValue,
   useTheme,
 } from "@chakra-ui/core";
 import { EditIcon, DeleteIcon, InfoIcon } from "@chakra-ui/icons";
@@ -120,6 +121,21 @@ function ItemSkeleton() {
 function ItemContainer({ children }) {
   const theme = useTheme();
 
+  const focusBackgroundColor = useColorModeValue(
+    theme.colors.gray["100"],
+    theme.colors.gray["700"]
+  );
+
+  const activeBorderColor = useColorModeValue(
+    theme.colors.green["400"],
+    theme.colors.green["500"]
+  );
+
+  const focusCheckedBorderColor = useColorModeValue(
+    theme.colors.green["800"],
+    theme.colors.green["300"]
+  );
+
   return (
     <Box
       p="1"
@@ -135,15 +151,15 @@ function ItemContainer({ children }) {
         css`
           &:hover,
           input:focus + & {
-            background-color: ${theme.colors.gray["100"]};
+            background-color: ${focusBackgroundColor};
           }
 
           input:active + & {
-            border-color: ${theme.colors.green["400"]};
+            border-color: ${activeBorderColor};
           }
 
           input:checked:focus + & {
-            border-color: ${theme.colors.green["800"]};
+            border-color: ${focusCheckedBorderColor};
           }
         `,
       ])}
@@ -159,6 +175,17 @@ function ItemContainer({ children }) {
  */
 function ItemThumbnail({ src, isWorn }) {
   const theme = useTheme();
+
+  const borderColor = useColorModeValue(
+    theme.colors.green["700"],
+    "transparent"
+  );
+
+  const focusBorderColor = useColorModeValue(
+    theme.colors.green["600"],
+    "transparent"
+  );
+
   return (
     <Box
       borderRadius="lg"
@@ -171,14 +198,14 @@ function ItemThumbnail({ src, isWorn }) {
       transformOrigin="center"
       className={css([
         {
-          borderColor: theme.colors.green["700"],
+          borderColor: `${borderColor} !important`,
           transform: "scale(0.8)",
         },
         !isWorn && {
           [containerHasFocus]: {
             opacity: "0.9",
             transform: "scale(0.9)",
-            borderColor: theme.colors.green["600"],
+            borderColor: `${focusBorderColor} !important`,
           },
         },
         isWorn && {
@@ -202,7 +229,6 @@ function ItemName({ children, ...props }) {
   return (
     <Box
       fontSize="md"
-      color="green.800"
       transition="all 0.15s"
       className={css`
         ${containerHasFocus} {
@@ -228,6 +254,15 @@ function ItemName({ children, ...props }) {
 function ItemActionButton({ icon, label, href, onClick }) {
   const theme = useTheme();
 
+  const focusBackgroundColor = useColorModeValue(
+    theme.colors.gray["300"],
+    theme.colors.gray["800"]
+  );
+  const focusColor = useColorModeValue(
+    theme.colors.gray["700"],
+    theme.colors.gray["200"]
+  );
+
   return (
     <Tooltip label={label} placement="top">
       <IconButton
@@ -250,8 +285,8 @@ function ItemActionButton({ icon, label, href, onClick }) {
           &:focus,
           &:hover {
             opacity: 1;
-            background-color: ${theme.colors.gray["300"]};
-            color: ${theme.colors.gray["700"]};
+            background-color: ${focusBackgroundColor};
+            color: ${focusColor};
           }
 
           /* On touch devices, always show the buttons! This avoids having to
diff --git a/src/app/WardrobePage/ItemsAndSearchPanels.js b/src/app/WardrobePage/ItemsAndSearchPanels.js
index 0c3794c..b636a08 100644
--- a/src/app/WardrobePage/ItemsAndSearchPanels.js
+++ b/src/app/WardrobePage/ItemsAndSearchPanels.js
@@ -7,6 +7,7 @@ import {
   InputGroup,
   InputLeftElement,
   InputRightElement,
+  useColorModeValue,
 } from "@chakra-ui/core";
 import { CloseIcon, SearchIcon } from "@chakra-ui/icons";
 
@@ -103,6 +104,8 @@ function SearchToolbar({
     }
   };
 
+  const focusBorderColor = useColorModeValue("green.600", "green.400");
+
   return (
     <InputGroup>
       <InputLeftElement>
@@ -111,8 +114,7 @@ function SearchToolbar({
       <Input
         placeholder="Search for items to add…"
         aria-label="Search for items to add…"
-        focusBorderColor="green.600"
-        color="green.800"
+        focusBorderColor={focusBorderColor}
         value={query}
         ref={searchQueryRef}
         onChange={(e) => onChange(e.target.value)}
diff --git a/src/app/WardrobePage/ItemsPanel.js b/src/app/WardrobePage/ItemsPanel.js
index a229292..118ab18 100644
--- a/src/app/WardrobePage/ItemsPanel.js
+++ b/src/app/WardrobePage/ItemsPanel.js
@@ -33,7 +33,7 @@ function ItemsPanel({ outfitState, loading, dispatchToOutfit }) {
   const { zonesAndItems } = outfitState;
 
   return (
-    <Box color="green.800">
+    <Box>
       <Box px="1">
         <OutfitHeading
           outfitState={outfitState}
@@ -202,7 +202,6 @@ function OutfitHeading({ outfitState, dispatchToOutfit }) {
                     <IconButton
                       icon={<EditIcon />}
                       variant="link"
-                      color="green.600"
                       aria-label="Edit outfit name"
                       title="Edit outfit name"
                     />
diff --git a/src/app/WardrobePage/OutfitControls.js b/src/app/WardrobePage/OutfitControls.js
index 6278abc..48c395b 100644
--- a/src/app/WardrobePage/OutfitControls.js
+++ b/src/app/WardrobePage/OutfitControls.js
@@ -2,6 +2,7 @@ import React from "react";
 import { css, cx } from "emotion";
 import {
   Box,
+  DarkMode,
   Flex,
   IconButton,
   Stack,
@@ -155,13 +156,14 @@ function OutfitControls({ outfitState, dispatchToOutfit }) {
          */}
         <Box flex="1 1 0" />
         <Box flex="0 0 auto">
-          <SpeciesColorPicker
-            speciesId={outfitState.speciesId}
-            colorId={outfitState.colorId}
-            idealPose={outfitState.pose}
-            dark
-            onChange={onSpeciesColorChange}
-          />
+          <DarkMode>
+            <SpeciesColorPicker
+              speciesId={outfitState.speciesId}
+              colorId={outfitState.colorId}
+              idealPose={outfitState.pose}
+              onChange={onSpeciesColorChange}
+            />
+          </DarkMode>
         </Box>
         <Flex flex="1 1 0" align="center" pl="4">
           <PosePicker
diff --git a/src/app/WardrobePage/PosePicker.js b/src/app/WardrobePage/PosePicker.js
index 771a753..a37be65 100644
--- a/src/app/WardrobePage/PosePicker.js
+++ b/src/app/WardrobePage/PosePicker.js
@@ -12,6 +12,7 @@ import {
   PopoverTrigger,
   Portal,
   VisuallyHidden,
+  useColorModeValue,
   useTheme,
 } from "@chakra-ui/core";
 
@@ -258,6 +259,11 @@ function PoseOption({ poseInfo, onChange, inputRef }) {
     label += ` (not modeled yet)`;
   }
 
+  const borderColor = useColorModeValue(
+    theme.colors.green["600"],
+    theme.colors.green["300"]
+  );
+
   return (
     <Box
       as="label"
@@ -316,7 +322,7 @@ function PoseOption({ poseInfo, onChange, inputRef }) {
           zIndex="2"
           className={cx(
             css`
-              border: 0px solid ${theme.colors.green["600"]};
+              border: 0px solid ${borderColor};
               transition: border-width 0.2s;
 
               &.not-available {
diff --git a/src/app/WardrobePage/SearchPanel.js b/src/app/WardrobePage/SearchPanel.js
index d37565c..7085324 100644
--- a/src/app/WardrobePage/SearchPanel.js
+++ b/src/app/WardrobePage/SearchPanel.js
@@ -39,7 +39,6 @@ function SearchPanel({
 
   return (
     <Box
-      color="green.800"
       onKeyDown={(e) => {
         // This will catch any Escape presses when the user's focus is inside
         // the SearchPanel.
@@ -125,7 +124,7 @@ function SearchResults({
     );
   } else if (error) {
     return (
-      <Text color="green.500">
+      <Text>
         We hit an error trying to load your search results{" "}
         <span role="img" aria-label="(sweat emoji)">
           😓
@@ -135,7 +134,7 @@ function SearchResults({
     );
   } else if (items.length === 0) {
     return (
-      <Text color="green.500">
+      <Text>
         We couldn't find any matching items{" "}
         <span role="img" aria-label="(thinking emoji)">
           🤔
diff --git a/src/app/WardrobePage/support/ItemLayerSupportModal.js b/src/app/WardrobePage/support/ItemLayerSupportModal.js
index c08fea1..bc0147b 100644
--- a/src/app/WardrobePage/support/ItemLayerSupportModal.js
+++ b/src/app/WardrobePage/support/ItemLayerSupportModal.js
@@ -122,7 +122,7 @@ function ItemLayerSupportModal({
   return (
     <Modal size="xl" isOpen={isOpen} onClose={onClose}>
       <ModalOverlay>
-        <ModalContent color="green.800">
+        <ModalContent>
           <ModalHeader>
             Layer {itemLayer.id}: {item.name}
           </ModalHeader>
diff --git a/src/app/WardrobePage/support/ItemLayerSupportUploadModal.js b/src/app/WardrobePage/support/ItemLayerSupportUploadModal.js
index edbe588..9be102f 100644
--- a/src/app/WardrobePage/support/ItemLayerSupportUploadModal.js
+++ b/src/app/WardrobePage/support/ItemLayerSupportUploadModal.js
@@ -144,7 +144,7 @@ function ItemLayerSupportUploadModal({ item, itemLayer, isOpen, onClose }) {
       onClose={onClose}
     >
       <ModalOverlay>
-        <ModalContent color="green.800">
+        <ModalContent>
           <ModalHeader textAlign="center">
             Upload PNG for {item.name}
           </ModalHeader>
diff --git a/src/app/WardrobePage/support/ItemSupportDrawer.js b/src/app/WardrobePage/support/ItemSupportDrawer.js
index 9077a9e..f57bbba 100644
--- a/src/app/WardrobePage/support/ItemSupportDrawer.js
+++ b/src/app/WardrobePage/support/ItemSupportDrawer.js
@@ -21,6 +21,7 @@ import {
   Spinner,
   Stack,
   useBreakpointValue,
+  useColorModeValue,
   useDisclosure,
 } from "@chakra-ui/core";
 import { CheckCircleIcon, EditIcon, ExternalLinkIcon } from "@chakra-ui/icons";
@@ -66,13 +67,13 @@ function ItemSupportDrawer({ item, isOpen, onClose }) {
           overflow="auto"
         >
           <DrawerCloseButton />
-          <DrawerHeader color="green.800">
+          <DrawerHeader>
             {item.name}
             <Badge colorScheme="pink" marginLeft="3">
               Support <span aria-hidden="true">💖</span>
             </Badge>
           </DrawerHeader>
-          <DrawerBody color="green.800">
+          <DrawerBody>
             <Box paddingBottom="5">
               <Stack spacing="8">
                 <ItemSupportSpecialColorFields item={item} />
@@ -156,6 +157,8 @@ function ItemSupportSpecialColorFields({ item }) {
     colorsData?.allColors?.filter((c) => !c.isStandard) || [];
   nonStandardColors.sort((a, b) => a.name.localeCompare(b.name));
 
+  const linkColor = useColorModeValue("green.500", "green.300");
+
   return (
     <FormControl
       isInvalid={colorsError || itemError || mutationError ? true : false}
@@ -217,7 +220,7 @@ function ItemSupportSpecialColorFields({ item }) {
             href={`https://impress.openneo.net/items/${
               item.id
             }-${item.name.replace(/ /g, "-")}`}
-            color="green.500"
+            color={linkColor}
             isExternal
           >
             item page <ExternalLinkIcon />
diff --git a/src/app/components/HangerSpinner.js b/src/app/components/HangerSpinner.js
index f0f5294..0033ab5 100644
--- a/src/app/components/HangerSpinner.js
+++ b/src/app/components/HangerSpinner.js
@@ -82,7 +82,7 @@ function HangerSpinner(props) {
           }
         `}
       >
-        <HangerIcon {...props} />
+        <HangerIcon color="green.300" {...props} />
       </Box>
     </>
   );
diff --git a/src/app/components/OutfitPreview.js b/src/app/components/OutfitPreview.js
index e80dd79..53e45df 100644
--- a/src/app/components/OutfitPreview.js
+++ b/src/app/components/OutfitPreview.js
@@ -176,7 +176,7 @@ export function OutfitLayers({
           />
         </FullScreenCenter>
         <FullScreenCenter zIndex="9001">
-          <HangerSpinner color="green.300" boxSize="48px" />
+          <HangerSpinner boxSize="48px" />
         </FullScreenCenter>
       </Box>
     </Box>
diff --git a/src/app/components/SpeciesColorPicker.js b/src/app/components/SpeciesColorPicker.js
index d3f6351..2f56ad4 100644
--- a/src/app/components/SpeciesColorPicker.js
+++ b/src/app/components/SpeciesColorPicker.js
@@ -1,7 +1,7 @@
 import React from "react";
 import gql from "graphql-tag";
 import { useQuery } from "@apollo/client";
-import { Box, Flex, Select, Text } from "@chakra-ui/core";
+import { Box, Flex, Select, Text, useColorModeValue } from "@chakra-ui/core";
 
 import { Delay, useFetch } from "../util";
 
@@ -55,9 +55,10 @@ function SpeciesColorPicker({
   const allSpecies = (meta && [...meta.allSpecies]) || [];
   allSpecies.sort((a, b) => a.name.localeCompare(b.name));
 
-  const backgroundColor = dark ? "gray.600" : "white";
-  const borderColor = dark ? "transparent" : "green.600";
-  const textColor = dark ? "gray.50" : "inherit";
+  const backgroundColor = useColorModeValue("white", "gray.600");
+  const borderColor = useColorModeValue("green.600", "transparent");
+  const textColor = useColorModeValue("inherit", "green.50");
+
   const SpeciesColorSelect = ({ isDisabled, isLoading, ...props }) => {
     const loadingProps = isLoading
       ? {
diff --git a/src/app/util.js b/src/app/util.js
index ed942ad..99e5ae5 100644
--- a/src/app/util.js
+++ b/src/app/util.js
@@ -34,9 +34,9 @@ export function Delay({ children, ms = 300 }) {
 export function Heading1({ children, ...props }) {
   return (
     <Heading
+      size="2xl"
       fontFamily="Delicious, sans-serif"
       fontWeight="800"
-      size="2xl"
       {...props}
     >
       {children}
@@ -52,7 +52,6 @@ export function Heading2({ children, ...props }) {
   return (
     <Heading
       size="xl"
-      color="green.800"
       fontFamily="Delicious, sans-serif"
       fontWeight="700"
       {...props}