Those you were looking at were GenV with color filters. They include hot, fiberoptic light boxes... as well as drilling holes into your headlight... and are not as bright as the newer technologies. Right now, the Phosphyre Halos are only available in Xenon white... but soon there will be hyperwhite, red, and blue. These will have NO fiberoptics and NO modification to your car. They are also brighter and will last much longer. Install is easier. List goes on.
If you want to be able to change colors, the GenV's are your only option... but if you want to pick one color and stick to it, then I think the solution is clear. PM me if you have any other questions i'm always glad to help.