Searching some more, I finally found some more information.
On V3k, it lists several lenses including Yellow.
According to the page:
Visible Light Transmission: 68%
A vibrant lens tint that increases visual acuity in extremely flat and low light conditions.
That yellow one is up to you to compare against the blue sensor, red sensor, and whatever they're calling the other sensor these days. Look at the graphs posted in the Smith thread. That's as much info you're going to get. Then it's personal preference. People swear by yellow, I hate it.