adding css for script manager color interface to main styles?

While learning how to use and write lua scripts for dt I was wondering what the color interface is and why it won't work at all until I read the source code and found issue #332.
Of course, the css for the color interface can be put in the custom css but I wonder if it would make sense to integrate it in the official themes to at least have a starting point for individual changes?
As I can see, color isn't a darktable thing as gray is way better for such an application. Thus, I'd propose a more muted green for active scripts, something like this.

Do you think it makes sense to prepare a PR for the dt themes with a little bit of color for that? Are there already any style guides for non-gray stuff?

Read issue #332 and the source code for the color interface first, then inspect how the official themes and custom CSS define script-manager styling. Clarify whether a style guide exists and agree on the proposed muted treatment. Done means the official themes provide a reviewed starting style for the color interface.