Well the Flex Mentallo collection is finally imminent. I recoloured the whole thing in close collaboration with Frank Quitely. He managed to unearth a lot of original pages, around a quarter of the whole book, which, although the production costs weren't in DC's budget, were scanned and used for as many pages as possible.
Here's a couple of images comparing the old colour with the new cleaned up line and colour. Plus the new page 12 from issue 1.