decompile title screen

include/constants/rgb.h

@@ -2,6 +2,7 @@
 #define GUARD_RGB_H
 
 #define RGB(r, g, b) ((r) | ((g) << 5) | ((b) << 10))
+#define _RGB(r, g, b) ((((b) & 0x1F) << 10) + (((g) & 0x1F) << 5) + ((r) & 0x1F))
 
 #define RGB_BLACK RGB(0, 0, 0)
 #define RGB_WHITE RGB(31, 31, 31)