Please excuse my exasperation. I thought this would be the Saviour I had been waiting for but no.
Please refer to this thread I posted in the Features and Ideas section.
http://forum.cakewalk.com/Please-bring-back-coloured-strips-in-Tungsten-m3429609.aspx I showed a mockup of what I need my SONAR to look like. It got massive support form SONAR users and absolutely no response from Cakewalk. The basic feature in a nutshell is to take the dark Tungsten theme and bring back coloured strips, which are absolutely essential in large projects, but those coloured strips would be darker than the pale versions in Mercury.
I thought that the new Theme Editor would solve this issue. Not only does this feature appear to be completely missing, but it's actually worse than that.
There is a big difference between Mercury and Tungsten, not only in colours and images. Mercury offers coloured strips and Tungsten doesn't. But I want my coloured strips to be dark and not pale like they are in Mercury (refer to the image I created in the aforementioned thread.
So it would appear that I cannot start with the Tungsten theme and add the strip colours.
So I thought "Oh well, I'll have to start with the Mercury theme which does have this feature and do a hell of a lot more editing to get the darker UI I need". Well that idea isn't going to happen either.
What I immediately discovered is that as soon as you make any change to the original Mercury theme however small, the resulting theme removes strip colours. WTF!!!!!!!!!!!!! WHY DOES THIS HAPPEN???

Please chip in this time Cakewalk and tell me I'm wrong and am missing something.