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Its about 4.000 lines and I don't want to edit the whole thing...
You should have kept it looking nice as you were writing it then! :P I think most IDE's will make your code look "pretty" (or so i've been told). Wish i'd been able to use one with my last project, the other members of my group refused to use proper styling conventions. As for printing out the colours (as in text pad), i've never tried that. I assume if you use a colour printer it will print out the colours, but i can't be sure of that. For the class diagrams, my University has a program called Together. It can generate all sorts such as class diagrams, sequence diagrams etc....