Colour puzzle magazine...

I don't know if anyone else has asked this question yet but it could come up... will there be colour puzzle magazines at some stage?

I suppose this would be puzzles that actually need colour, I'm not sure how many of those there are.

Or it could be used to make things a little clearer for things like killer sudoku, sometimes the dotted regions on those can be a little confusing on the eye for instance so colour could be used instead.

I suppose it would make it more expensive for people to print, but anyway just an idea!