The subject says it all. I want blue with a black background. Right now, I have purple with a gray background. There is not enough contrast, but I don't want to go all Fisher-Price. Is there a way to change the RSD interface theme colors?

I guess you must be using Bootstrap since you are mentioning purple. If you change to 'Frameworkless', you will get blue where you have the purple colour now. The canvas can be changed to any colour you want, Check 'Actions -> Preferences'.

Thank you for the information.

Follow up, if you don't mind: I have imported quite a few templates, including some duplicates. I would like to delete some of them, or at least alphabetize them. Is this possible? If they were alphabetized, I would not have duplicates. For example, "Dart" and "dart" are both in my templates, now.

If that is not possible, is there a way to fully reset Site Designer to Defaults, including templates being removed?

The templates that end up in your 'My templates' cannot be sorted alphabetically. You can access the folder Documents\CoffeeCup Software\Site Designer\Themes\My Themes (on Windows) where you will in fact see the templates sorted (a-z), and if you have duplicates, you can delete the ones you don't need.

But templates you import from the CC site should actually end up outside the 'My templates' folder, and there they will be put in alphabetically.