It would be great if there were a right-click menu option for custom Rad controls to "apply the theme to all sub-controls", similar to how Forms work.
I've attached images to illustrate the functionality.
Right now it only works for forms, and my custom controls have to be manually adjusted one at a time, by hand, which is time consuming and error prone.
It would save a lot of time and reduce the chance of missing a control when applying themes locally.
Right now the only way to apply themes is either globally or individually by hand, or with a find-replace-in-files command on the ThemeName property.