BoM Avatar skin texture to other mesh with alpha respected

[PureRich]

Hello,

I have a product for toes, that has a mesh overlay for the skin.
This skin has a texture with alpha to make the skin to skin transition smoothly.

The problem here is, that it's not easy to match the skin color perfectly of the mesh overlay with the avatar's skin.

I thought the BoM feature could be applied on the added mesh to match the skin tone perfectly, but still respecting the alpha of the actual texture.

See examples in-game and the actual texture of the added mesh overlay. The red lines are showcasing the alpha area.

Question is, is it possible to do this?
If yes, how does it work?

I couldn't find any tutorial...

Regards