Oops, I never actually saw the practically invisible text in light mode! Let's make it actually dark in light mode item pages, and still dark in all wardrobe pages!
To help the load time for outfits feel shorter, we now reuse the outfit thumbnail from the Your Outfits page as a placeholder!
This doesn't add any overhead when the thumbnail data _isn't_ in your session cache, e.g. if you navigate to the outfit directly. But if we have the thumbnail on hand already, we just show it, easy peasy!
