We should have a really nice looking red Dye called "Emperor's Blood" that you get by Killing an Emperor in PVP 8)
it's called regicide red, it is uncommon, and I have it. I have killed former emperors but never a current emperor, so I guess that's all you need to do, and there are a ton of them.
It is a much darker red, not as shiny because it is not a rare.
Dear Sister, I do not spread rumors, I create them.
Personally I am a blue/black/gold guy, but many of my friends in game are the red/black and so many were happy they got Ruby Throne Red unlocked on accident until it was withdrawn.
I think ZOS should've made the Ruby Throne Red unlock as one of those tree unlocks where you had to complete at least 1 of the following: