My first attempt with exchange of halogen capsule lamps to LED. 1) the color is basically warm white, probably as is in accordance with 3000K, I can not control. My subjective impression is in direct comparison that the LEDs light up slightly bluer than the old 20W halogen. But is perfectly acceptable. A 1: 1 replacement, it is not for "Yellow Light usual". If there are LEDs with 2800K or 2700K, I would try. 2) the LEDs are on the back Elektronikbauteile.Gerade one is very thick! This means that in the ceiling ridicule the round board is not shielded to the front of the spot, but only obliquely, since the capacitor encounters the back against the reflector. A note in the sales description would have been helpful. So stop everyone does in this LED design (disc) his harsh words.