Corals get their colors from algae that is living in their tissues. The vivid colors you see in corals is actually the algae producing color pigments to block damaging UV rays. Blue light (not the beer) is closer in spectrum to UV wavelengths and therefore highlights these pigments.

The most important aspect for lighting corals is PAR (Photosynthetically Active Radiation), which is the spectrum of light that is usable for photosynthesis. I believe (but could be wrong) that true actinic bulbs supply little to no PAR. However, in the T5 world of bulbs there are blue bulbs that are not truly actinic which supply good PAR and fluorescence in corals (e.g. ATI Blue+). I'm not sure that such a bulb is available in other bulb types.

For your light set up I'd stick with a 10K and an actinic bulb. That will give you good color and good growth.