If you decide to change your license plate lights you need to buy special bulbs that have resistors in them.
Regular bulbs will trigger some sensors and you will always get a message on your Idrive that the bulbs are out even though they are not. Thats why for the rear license plate you will need error free lights. Also they are 100 times brighter then the stock ones and make the car look more up to date and much better. In other words they look great!
On the picture they look more blue but really they are bright white color. You can get them in other colors, I bought blue ones but immediatly took them off because I didnt wanna risk and get pulled over.