michaeljanzen написавAwesome thanks so much! This really helped, sorry if this was a simple concept - I didn't fully understand how the Skin mechanic and linking meshes worked.
Here's some of the test results, swapping back and forth between the colors. Again, I truly appreciate your help today Erikari!

This is truly beautiful work!
Hi everyone!
I'm having a bit of trouble with the skins and meshes
I'm creating a new skin first, then selecting the attachment for each body part and selecting add new skin naming each new skin to match the new skin name.
This works fine on the first one.
When adding a second character I have a linked mesh so the linked mesh has to stay in the same attachment.
When doing this if I select between skin 1 and 2 the linked mesh attachment are not visible on the first skin.
If I put the linked mesh in another attachment the skins are visible but do not have any of the values of the original mesh
Can you please point me in the right direction? Many Thanks!