-extern cvar_t vid_gamma;
-extern cvar_t vid_brightness;
-extern cvar_t vid_contrast;
+#ifndef PALLETE_H
+#define PALLETE_H
+
+extern cvar_t v_gamma;
+extern cvar_t v_contrast;
+extern cvar_t v_brightness;
+extern cvar_t v_overbrightbits;
+extern cvar_t v_hwgamma;