Still a few problems with the structure of the skeleton, which would be pretty good if you fixed, but let's focus on the muscles for now.
I think that marking each muscle in a different colour is more trouble than it's worth, try going for a solid red colour for all muscles along with several shades to mark indentations and shadows.
Here are a few more sketches I've made of some muscles, mainly added the torso ones (going to add a few more later). Also fixed some problems with the muscle insertions (chest and traps) where I was wrong.
Hopefully this is of some help to you and not just out there to bolster my ego (all in all though it does help me too, can't say that I'm a master at anatomy, not just yet anyway)

