None of them are colourful - it was printed in 1913!
The best edition is, obviously, the first one, but that will cost you a lot of money. The reproduction I have is the 1974 reprint but, as it is in the public domain, there are a lot of reprints available. You really want one that reproduces it in a reasonable size to get the little margin drawings and photos.
The edition I have is the 1974 one by Arms and Armour Press which is the same size as the original and has very good reproduction but even that one will set you back £40.