Colors like Golden Yellow can only be made with RGBA driver... the RGBW driver is much too "cool" and won't give many truly warm colors.
Funnily enough, a nice bright lime green (closest to neon you can get) is best with an RGBA driver as well.
Yes, brown is possible, it's just not very bright.
Flesh color is also possible!
I don't have a good way to take pictures, but I'm sure other Emerald owners can!
Right. If any one can make it id love to see it! If I can, I'll buy both kinds eventually.