Default to masc/fem for colors like "elderlyboy", in item previews

instead of doing the random choice we do for most colors.

This is especially noticeable in cases where like, I'm looking at the
Elderlyboy Ogrin and like, it has *work* put into the masc eyes, and
them fem eyes are just the standard ones.

app/models/color.rb

@@ -35,6 +35,16 @@ class Color < ApplicationRecord
     end
   end
 
+  def default_gender_presentation
+    if name.downcase.ends_with? "boy"
+      :masc
+    elsif name.downcase.ends_with? "girl"
+      :fem
+    else
+      nil
+    end
+  end
+
   def self.pranks_funny?
     now = Time.now.in_time_zone('Pacific Time (US & Canada)')
     now.month == 4 && now.day == 1

app/models/pet_type.rb

@@ -107,9 +107,11 @@ class PetType < ApplicationRecord
 
   def canonical_pet_state
     # For consistency (randomness is always scary!), we use the PetType ID to
-    # determine which gender to prefer. That way, it'll be stable, but we'll
+    # determine which gender to prefer, if it's not built into the color. That
-    # still get the *vibes* of uniform randomness.
+    # way, it'll be stable, but we'll still get the *vibes* of randomness.
-    preferred_gender = id % 2 == 0 ? :fem : :masc
+    preferred_gender = color.default_gender_presentation ||
+      (id % 2 == 0 ? :fem : :masc)
+    puts preferred_gender
 
     # NOTE: If this were only being called on one pet type at a time, it would
     # be more efficient to send this as a single query with an `order` part and