replacement bulbs

i started to read the tread about bulbs and pics. are you guys running these lights all the time even the all blue ones? i read on a different thread they had all blues with 1 red which made the water look pink. i have a mixed reef tank. i was thinking about tossing 1 in for my new sps. does any1 have a pic on what that would look like. plus i was thinking why not toss a red in there a well. im still new at this hobby or way of life. i bought ssome corals that glow under the blue lights but i have some i think if i added another color they would glow. thank you for your time.