You can't change any colour option on colour set 1 wide (rom_col), as this is locked so not to corrupt the systems boot colour config.

However, you can change the 2nd colour set for both wide and split, rom_col2 (set2, wide) and rom_col3 (set2, split).

Do the changes on them and then switch to colour set 2 from the main menu.

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Sept 03, M3, Silver Grey. Retro-fits: Modded Mk4 DVD Drive, OEM Bluetooth, VR Control, Rainbow Speaker Upgrade, Sony SOT Amp, HK Sub, CCFL, Intravee II, NightMode.