If I can throw in my 2c, themes are like nutrition facts. When I was a kid eggs were the healthiest thing to consume in universe. Then they were a root of all evil, and now days are nutrition packed food.
I have observed similar circles in background color usability. Pharo has ability to choose a theme, it has both currently fashionable and older ones to choose from. I do not see need for anything else on that front. Davorin Rusevljan
