BWS designed the color for Weapon X specifically to be printed on the cheap newsprint typically used for comics. When Marvel collected the story in it's subsequent hardcover and paperback trade collections, they failed to adjust the color levels to compensate for the better quality paper the trades are printed on. The result is that the color in the trade collections of Weapon X is lurid and oversaturated, and does not represent what was intended by the artist.   Despite the weaker blacks in the original Marvel Comics Presents printings (due to the use of plastic printing plates Marvel was experimenting with at the time to save money), those editions on newsprint are a truer representation of the work. BWS has contacted Marvel to try to get them to adjust the color on successive reprintings of the Weapon X trade collections, with no response.
Above: Page 5 of Weapon X Chapter 4, as printed
on newsprint in Marvel Comics Presents #76 (1991)
Above: Page 5 of Weapon X Chapter 4, as printed
on glossy paper in the trade editions