Anime vs manga colored : r/bleach

So about almost 2 years ago I bought this Japanese volume of bleach which came with colored pages and I always wondered if this was a normal occurrence with these volumes but

I draw/color anime characters in my freetime, here is one i made for Bleach! : r/bleach

Some More Colored Bleach Manga For Ur Feed : r/bleach

Colored Bleach Manga For Ur Feed Vol. 6 : r/bleach

Second manga color drawing! I don't actually like this one much but I'll show it anyways. : r/bleach

Who is responsible for the coloring of the bleach manga? an official source? : r/bleach

I colored this page of Ulquiorra : r/bleach

Manga Coloring] Ichigo Turning into a Hollow Versus Ulquiorra : r/bleach

Colored Bleach Manga For Ur Feed Vol. 6 : r/bleach