interior lights

[buck34]

Does anyone know what type of bulb it is in the overhead courtesy lights on a 2002 estate.
I want to change to a coloured bulb such as blue.

Thanks any other as styling ideas greatly appreciated

Buck34_7

[rwb]

I'm pretty certain it's a 501, the same as the number plate bulbs -- I once swapped them for an MOT.

[RayneR]

W5W/501 pretty sure, but i never changed to blue ones since it's creepy and i think it will fail car inspection/MOT, here the only acceptable light is white and amber.