Edit: Thank you everyone, once again, for filling in the colour scheme challenge meme and showing such an interest. I'm glad you're all having fun with this!
I searched dA for a meme like this but couldn't find one, so I made one myself!
The rules are simple, just do a painting/drawing in each of the boxes using only the colours specified.
Obviously this is more suited to digital art, but there's nothing to say a traditional artist couldn't do it. As long as the colours are similar, I guess.
I recommend downloading the huge version, it's easier to fill in.