Textures on HUDS

Hey guys I just have a quick question im recoding the HUD on Dark RP cause its ugly and was wondering how would i change [lua]local backgroundcolor = Color(105, 105, 105, 255)[/lua]
into a [lua]gettextureid[/lua] i have no idea where to find textures which is mainly why im asking.
Thanks for any help.

Are you sure you should be recoding the HUD if you don’t know this?

thanks even though you were a bit rude.

Facepunch is.