marker light suggestions

[NW Modeling List]

I'm looking for working marker lights for my CH caboose model and have
decided to paint a pair of Tomar Adlake marker lights like these:
http://www.walthers.com/exec/productinfo/81-807L, but would like to know,
should I go for a pair that have green or yellow  lenses? I'm thinking
green, but wanted to get an opinion from you all first.

Thank you in advance
Alvie Hearren
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