[Suggestion] Make it easier to identify challenges that were completed using chao keys
I'm not entirely sure how common this is, but I have ran into many scenarios in which I use a chao key on a challenge I don't want to complete at the moment with the intent of returning to complete it legitimately later. At the moment, challenges which were completed using keys have grayed out descriptions when hovering over them, but with the sheer number of challenges that exist in this game, it's a bit difficult to find these challenges through this distinction alone. I was thinking that challenges completed using keys could instead have a different colored icon to allow players to see them easily in case they want to revisit the challenge later.
I created this (admittedly very crappy) mockup of what "keyed" challenges might look like on the menu, with the ones on the left having been completed using keys and the ones on the right having been completed as per their description. There are most likely much better palette choices than what I have chosen, but I hope this image conveys the general idea of what I'm hoping for.