Light bulbs

Does anyone know what kind of light bulb I need to replace to change my halo rings from yellow to white? I just want to know what kind of bulb and maybe where I can find some

I bought my led replacement bulbs from Hong Kong, through Ebay.

Unfortunately I did not get resistors with them and they flicker a few times whenever I start the motor. This is a normal procedure to check the bulbs, but leds do not like this, and they are now not as bright as when I first received them.

I have now ordered some from another supplier in England, and they have built in resistors to prevent flickering problem.

Leds give a very white light, and are a good replacement for the old yellow bulbs, and do not give a fault message on the dash.

http://www.ecstuning.com/Search/ES2210305/ES2210305/

have had these in my car since june
no problems/errors at all