Assorted Keys!

I like checking different colour palettes using simple objects, and I figured somebody might want these for....something? 
I've included two sets of single pngs (32x32  and 16x32), two matching uncut sprite sheets, and two super scaled-up "screenshot" images (8x and 16x) that can also be manually cropped if you want/need something larger. 

If you want to use these for anything, attribution would be cool, but not necessary!