But I would glady look at what scirra will come up with or someone else. But there are still issues with official dark theme in github issue tracker, after so many years. Cases that would take ~10min to fix. So if they even make new theme, it would take very long time to get solid enough and issue free.
Hey sorry for bothering you 
SnipG, I just wonder what kind of issues you ran into? I've downloaded your dark theme-edit because it was the only way I could figure out to get the default dark theme with code ready to be edited. I'm currently editing the theme to go along with the Dracula 2 visual style as I did not like that all grey default look.