Zarblay Xemplok was not amused when he realised the colors of his world were actually some of the most fugly colors in the universe! :P
-This one should be following all the restrictions- 15colors, 2 same-brightness colors per 8x8px block. I've tested it, both manually and in Img2ZXSpec :)
It started as a tileset, and expanded upon it a bit, hehe.
The preview image, however, does not follow the 8x8 block restriction.
Great challenge due to the fugly colors and the, well, challenge, of making something sensible out of them. First time trying to make a piece in ZX Spectrum mode! :P