Best LED combo for a moonlight

[ecam]

I m getting ready to order a moonlight for my 120 display. i can customize the lights and was thinking of adding to the basic blue and white lights. The fixture will hold 18 LEDS and the colors avaiable are: blue, purple, red and white.
Any recommended combinations or should i keep it simple with alternating blue and white?

Thanks for the input

 

[revsgirl]

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