Light Observation?

[NanaReefer]

When viewing my tank with lights out, using a small white LED flash light, my rock is green.
Under my white & blue LED's NO green on the rock is visible at all. This amazes me! What other colors am I not seeing?

 

[JOKER]

You really want to watch tank at lights out get you a red light nothing hides with red.

 

[NanaReefer]

Oh I have one of those too Was more interested in the difference in certain colors showing or in this case not showing under different lighting. I'll take pics to show what I mean.