The colors look dirty with the monochrome screentones.

Base +9, derpderp2 +9, BlickWinkel +9, Granten +11, blagblag +8, Boneriffic +17, FuwaFuwariFuwaFuwaru +3, backslash +8, Demosthenes +19, drackx +8, Flandre Alex +1, Jizz23 +6

Colors aren't that bad. Not perfect, but it's still a decent effort.

Base +22, blagblag +8, Kiryu4K +9, Demoni +10, Boneriffic +17, backslash +8, drackx -8, wawa1411 +7

@anon
Much Better than these coloring:
/g/585509/00ea823541/

Base +8, pedobear1 -13, unified +7, Jizz23 +6

colored by Laura20 at paraisonage.blogspot

Base +9

The effort in color wasn't that bad though I wish the doujin spent more time on each girl

Base +9, drackx -8, wawa1411 +7

Aww. Poor Rei never got fucked.

Base +8, Ahmenhotep +7, Watsa +15

If only the whole thing was as good as the cover. Honestly the cover is the best colored part.

Base +6, drackx +8, Gorva +10, Jizz23 +6

Well, to properly colorize something, you'd basically have to recreate the drawing since we don't have access to the original materials. Then, it can be colored and shaded in a good way without the original monochrome coming through.

Still, this is a decent job for what it is worth.

Base +8, drackx -8, wawa1411 +7