Opening files directly in RGB mode

[WargodHernandez]

Not that I know of but there is the ability to toggle recursively certain properties

toggleRecurive.JPG (53.57 KiB) Viewed 65954 times

So for your use the fastest way would be to click into the DB Tree area press "Ctrl+A" to select all, then "S" to turn off scalar display, then "C" to turn on RGB color display. Takes only a second to do regardless of how many clouds you have