Display colors muted

[Theatrebug]

I have had my 25 s Ultra  display  color appear muted without  making any adjustments to my phone.   Now I  can't figure out how to  get the colors corrected.  Any suggestions?

[Robin621k]

Go to settings, display, screen mode, vivid, turn the slider all the up.

[Robin621k]

It also helps if you use a crystal clear glass screen protector to give you back a glossy display.