Naturally they've got patents on this thing. The price is right too. Far better than fluorescent. Mercury is also the reason for the large spikes in the spectral power distribution. It's the lighting source, not your device, not your color management software, not your color correction.
Lighting is one of the biggest reasons for color problems.
The SoLux bulbs are supposed to be quite good for light boxes. Over the course of the day, the color temperature of daylight varies from 4773K to something like 6540K. Anyway, that can make a big difference. Not sure what the price is. They all have a spiky power distribution which to me makes them less than ideal. They give off massive spikes at various wavelengths which inherently makes them non-D50 in their behavior.