List of skins used in machine

Is it possible to get a list of skins that you've used in your machine before you upload it?

My machine has 320 blocks and having played with different skins downloaded from Steam Workshop during it's construction, I wanna know if I've e.g. accidentally left a brace with an incorrect skin pack in there somewhere.

It would be nice if someone made a mod that could highlight or colour blocks in your machine that use a certain skin...