ramscapri
You bet its tedious. Fully agree. Moreover, it seemed to me that not all resources are in TungstenTheme.fth.
Somehow, I had a feeling that a lot of them were set from an existing default which are absent in this .fth. Maybe they are only in some default .dll.
Or well, I might have just overlooked them when scrolling through the seemingly endless lists... 
I think it seems true not all the resources are in TungstenTheme.fth because some of my Duckbar resources that I modified did not exist in the Tungsten file. The default resource file (or use to be) is the TTSRES.dll file that still appears in the installation, so maybe some of those are still used? Or maybe those resources were dropped in the Tungsten version?
There is also TTSImage.dll installed now. I haven't looked into what it contains, but ralf up top thought it was the Mercury theme resources. I disagree at least partly, because Duckbar installs my themes into Mercury just fine, and Duckbar only uses TTSRES.dll to my knowledge.
As far as getting FX bin containers to match track colors, that will be a tough one if not impossible. Previously these were static resources in TTSRES.dll that were easily changed to get rid of the non-descript greys. But since they're static, I don't think the Sonar executable would have a way to dynamicall modify them. That is, there may be no exe colors associated with them. But what do I know!
Edited because I hit "Post" instead of "Preview" by mistake.