Yeah, mine aren't that bright! I might mask off all but the centre of 3 LEDs in each festoon and spray it black. Should dim it damn by about, ooh, 33%. Should be alright then.
I'm really pulling my hair out over the rear passenger lamps though. I got some T5 Neo bulbs from Hong Kong, but they are utter rubbish. For anyone thinking about it, don't bother. I'm looking around for components to weld in the gap for a brighter white light in the back instead of a dim blue tinge. If anyone's got any advice, that would be great.