So I have been trying to figure this out for a while, I am wanting to know if it is possible to change the color of the hud, as the Game Directory is missing the file ClientScheme.res.
It would be helpful if someone could help me or supply me information about this.
Extract it from the bms_misc_dir.vpk.
Thank You 
Im guessing that the Multiplayer Hud is in the same folder?
If not the same file. Can’t say for certain, might have to experiment.
Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.