Alrighty, as requested...
Start off by putting your index finger to the right side of the side repeater. Nearest the door of the car.
Once there, simply pull it towards the front of the car and it should click out.
The wires can be pulled out enough for you to take off the harness.
Finnished...
You can do whatever you want! Whether it be painting them, or simply changing the bulb. The bulbs inside are Orange 501s.