Those are called 'bell pendants' and they are almost always white on the inside.
Your colour issues are most likely bulb related. Many bulbs don't achieve their stated colour temperature. What brand are they? BTW 14000K should only have a slight blue tinge to them and that can easily be lost when tank water 'yellows' over time.
Sanjay's MH database has a good listing of lamps and their actual corrected colour temperature (CCT):
http://www.reeflightinginfo.arvixe.com/
Check the brand of your bulbs and look them up and see how they actually measured.