If you want to keep it simple, you can just wire the angel eyes to an ignition switched lead, so that whenever the car is on the angel eyes will be on. It's pretty much the same as trying to wiring them into the DRL circuit.
it is not cold cathod, they are factory bmw angle eye so they are lamp powered ... ugly yellow.... where is the ignition switch? can i wire it somewhere in the engine bay? I have no idea how to go through firewall otherwise I'd set-up a switch for the angle eye so I can change colors.