What underglow color would look best on my motorcycle?

Been considering underglow LED lights on my Honda VTX 1300 but unsure on what color would look best. My bike is a darker midnight blue color. It s something I may only use once or twice but I still like it so if your going to say don t do it then just don t respond. And let s just assume all colors are legal. But if you had a second option that would be awesome as well. (Yes I know it s a matter of opinion). Thanks.

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