why colors are muddy and not very bright picture(has a solution) (Call of Duty: World at War)

why colors muddy
Spoiler
solution found
In the main menu go to settings and turn on the console.
Bo time the game press [~] (tilde) and enter devmap mak
to activate cheat mode (for each location you need to enter the activation again
T. e. for the first level you enter devmap mak, for the second devmap pel1,
for the third devmap pel2, etc.)
A list of the names of the levels (for code devmap):
mak
pel1
pel2
sniper
see1
pel1a
pel1b
see2
ber1
ber2
pby_fly
oki2
oki3
ber3
ber3b
nazi_zombie_prototype

after I loaded the level the one that needs it
start there to write contrast
displayed
r_contrast

by default, there is 1 but we'll get 1.2 or 1.25 and made a few adjustments to the brightness in the game settings and then the picture will become rich
or just copy here and paste there

r_contrast 1.2 and adjust the brightness a bit in the game settings.you can adjust to your taste and color as you like.