Is there a way to do saturation with viewport?

so i wanted to ask is there anyway to put saturation on viewports? or atleast change its brightness?? Now to be clear I am NOT trying to hurt the players eyes or do anything malicious I am only trying to make it like old tvs that have oversaturated screens, So is there anyway to do this??

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Not sure about saturation, but I think you can just put a half transparent white frame in front of the viewport, making it look brighter.

Oh this actually worked thank you!