NOTE: as we cannot make BlueprintCallable functions EditorOnly, we've previously flagged these as "DevelopmentOnly", and made them non-functional outside of the editor However, that restriction has now been removed, since the functions do nothing outside the Editor, so it is ok for them to be included in packaged games.EDITOR ONLY - Specifies which intermediate target to pick colors from (if left unset, we default to the display image)