LED for headlight

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What color type LED do you guys use for headlights on steam locomotives? I have used Miniatronics Yeloglo/white in the past, but I am not sure if that is the appropriate color for a steam generation head light. Would they're just plain white LED be more realistic? I am currently modeling some Bowser L-1 Mikados, just to give you guys an idea of what locomotives I'm refering to.


Mark