I can see what you mean, most manga, if not all, are generally done without colour, but to be honest, i dunno if it would be the same to read manga in a full colour format. The way i look at it is that for the authors, who not only draw but write the manga, it'd be a bit too much work to do in a oner. They do with their weekly chapters have maybe one or two colour pages, but thats it. The time they have to get them in stops them from getting more than that done i think. As for ones complete..i dunno...does it need it done? I mean its fine to read as is, does it really need the colour?