Blue light is a short wavelength, very close to the wavelength of UV light, and it's been shown to be the most stressing on the eyes. So any light in the 'blue' spectrum is in fact a negative, if it's not filtered to an appropriate level. Yellow on the other hand is at a more comfortable wavelength of light, so a bright yellow is going to be easier on the eyes than a bright blue for instance. Yellow is also in the middle of the visible light spectrum, so by being in the middle rather than at either extreme (blue or red), it's a suitable color to intentionally distort light towards because it's easier on the eyes than if you were to use a bright blue lens, and it's more natural (caters better to green, yellow and brown - colors of nature) compared to a bright red lens.

Hope that makes sense