How to change layout color on the website?(not the image)

[Keiro]

for example in tibia.com the color is blue i guess ;P

the image im using on my website ends with gray, so i want the layout to be all gray ...so when ppl scroll down, they wont see blue..-.-

 

[EvulMastah]

.css body { background-color: color }

 

[Keiro]

got it, thanks you!!

 

[Brent Dalli]

.css body { background-color: color }

Wheres that .css~? lol

 

[Belthazor]

its that file
htdocs\layouts\tibiacom\basic.css