Yellow is the wavelength mostly responsible for perceived glare. It lies on the "red" side of the eye sensitivity curve, while this curve shifts to red for higher intensity, while this shift make yellow more intensive, what closes the eye iris, so everything look's darker (and that's the principle of glare). The yellow is the mostly sensitive for these shifts and moreover the shift goes in wrong direction.
So if you avoid yellow, you trick the eye to stay open, allowing more other light to pass in, so everything look brighter and more colorful.
The same mechanism cause the relative (for given lamp lumen output) poor visibility under sodium lights, compare to cool white lamps (e.g. MV) - on low level, so when looking to illuminated objects, the curve shift to blue, so they appear dark, while when the lamp is in view, it's brightness shift the curve towards red and make the lamp appearing much brighter.
Actually Reveal incandescent lamps have a spectrum hole. They are nothing special: You put on a filter, and it blocks out a portion of spectrum. They can make colors appear brighter or "pop" becuase of a distortion effect of the spectum hole. The spectrum hole is basically in yellow/yellow-orange light, but things that are yellow in color still reflect the red and green light on either side of the specrum hole. Things that are red or green reflect the red or green light directly and are not mixing in any yellow light due to the spectrum hole. This distortion effect is similar to cfl's. They are no not full spectrum by any means.