yes it is possible. i have done it to mine. I have a 18 cm led strip stuck into my interior light :L. however i have mine wired in so it only comes on when the doors are opened. think this is far more effective and a problem ocours when u have all tht shuved inside the light tht the leds stop u from moving the light to turn them on. but you can get a blue bulb to fit the space might be a better option. will up load a pic soon. i also put blue leds in my boot. Crappy pictures. i will get some at night time far better effect.