Which 250 watt bulb?

[danfrith]

Hi, I have decided to go with the odyssea 250 20k watt, 2x24 watt pc actinic fixture for my 29 gal. biocube. Now, i think 20k + two actinics is going to make the tank look really blue, so what 250 watt bulb would you go with for this? I dont want it to be too yellow looking either. I was thinking maybe a 10k or between 10k and 14k but I dont really know much about this, so what bulb do you think would look the most natural bust still bring out good cloros in the corals? Feel free to post your opinion.
thanks.