HUD
If you want change HP, AR, flashlight color, you can't. You can change color with custom DLLs. Custom DLLs are banned in HL1. If you want change sprite HP / AR, just change those sprites.
Recent runs
If you want change HP, AR, flashlight color, you can't. You can change color with custom DLLs. Custom DLLs are banned in HL1. If you want change sprite HP / AR, just change those sprites.