Yep, you've picked the 2nd skintone colour (it will show up as the 3rd in Outfit). It was launched without the proper code for the 2nd skintone, however I've since patched it. All you need to do is update your game by going to your Itch app, click Tailor Tales and "check for updates".
Then go to Settings > Profile > CG Colours, Pick your colours again and click finished, it should now work! :)
Of course, you would need to have installed Tailor Tales through the Itch app (as I recommended) to be able to receive the update.