Good to know people are still making use of Theme Editor, but yes, always room for improvement.
Sadly, theming the CbB UI is by no means a quick and easy job. A basic understanding of at least one graphic design app is, unfortunately, a prerequisite. There's only so much we can do to make the process quicker and easier - short of rewriting most of the CbB UI code (but that's another story!).
That said, it's crying out for some obvious improvements here and there, so leave it with me. I'll try to sneak in some tweaks over the coming months.
ps. Thanks Bristol_Jonesey. Yes, still based in the UK (Midlands) :)