Hmm.. This might be a stretch, but hear me out lol
Although it looks pretty tame, you gotta consider the fact that if a character's bleeding literal puddles of blood, the wound must be pretty severe. Unless your character's dying, there's a good chance they'll have to appear in the next episode, and maybe it's like a preventative way to avoid having your readers see potential gore. Had you done it in black and white, you might've actually been able to get away with it as originally intended.. But it's still a puddle of blood, so I'm not entirely sure color may have been the issue