Although I only purchased MOI about a week ago (and am delighted with it by the way!), I have been intrigued by this thread, and being a bit of a 'fiddler' have been having a go at making my own changes.

Modo is my other favourite 3d app and I like its darker theme, so here is my attempt at producing something similar. I've based it on the UI provided by Tony (aka Ash) in this thread as I like its layout and the additional tools, but have darkened it down some what. I have attached a screen grab ... What do you think?

The modified files are in the second attachment.