Eggcrate colour and bottom

[o.c.d.]

I wouldn't paint the bottom dark, I'd go white to reflect the light back under the coral. I've even pondered a how well a mirror would work on the bottom. As for the eggcrate makes sense that the white would reflect the light off it, and that black may heat up. But I'm thinking it would be very little difference. Maybe some of the frag masters will have something to say about it.