Colour Nonogram Puzzles...

Has anyone tried colour nonogram puzzles? I have only ever seen a couple of them and found them pretty tricky.

However, once you get into them they are quite rewarding to solve and you do have a nicer image at the end than with black and white ones.

The only thing is that using the different colours can be quite confusing and the ones I saw in a magazine the colours were quite similar: like three shades of green or something, so it was very hard in practice to remember which was which and sometimes led to confusion.

What does everyone else think of colour nonogram puzzles, if you've ever played them? I assume they must be quite time consuming to make and a bit of a specialist thing given they appear only very rarely, and of course require colour print too!

Stacey