Is there any way of changing the current backpack page button color or is it hardcoded? Image for reference

I tried with the clientscheme and still it doesn't change, this is the clientscheme part that is supposed to be the one which changes it

"Button.TextColor"				"White"
"Button.BgColor"				"Black"
"Button.ArmedTextColor"				"White"
"Button.ArmedBgColor"				"Purple"
"Button.SelectedTextColor"			"White"
"Button.SelectedBgColor"			"Purple"
"Button.DepressedTextColor"			"White"
"Button.DepressedBgColor"			"Purple"

EDIT:
After a lot of trial and error, I found out that TFOrange at the clientscheme is the color that controls that specific button