Usually with a flicker-flicker-dead symptom it is indeed the ballast. Same happened to me once a swap cured it.

A color change in the bulb depends on how long it stays on. Naturally the Xenon bulb needs to "warm up" for a few seconds to reach operating / color temp.

But the situation you described is a bit difficult, in a situation where they DO stay on, maybe not enough voltage? A bad ground would likely make them default off, or so i think. But the ground inside the light is rather sturdy, now wiring from the light to the LCM is another story and even then they are independently ran, so the LCM just may be the final factor.

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2004 BMW X5 4.8is [Black Sapphire] / [Black Nappa] [Nav] [DSP] [Style 87]
2003 BMW 540i [Sterling Gray / Gray]
[Msport] [Mods from A-Z] [Two-tone Interior]