Got it !!!
(Utterly by accident! :)) )

1. Set the universal color theme to one of the universal versions, not any specially downloaded color themes!

It has to be a built-in, default theme (either light or dank)...one that InlijIdea has it by default!

2. Go to Settings -> Editor -> Color Theme -> Console Colors and here, in the right-side menu, you will see the Background, Input, Output etc...click on them and they can be changed individually!

WARNING --- This will NOT work if you allready replaced the default color themes with ANY of the after-market/ custom downloaded ones, because those will override the settings for each panel!