I like dyes. I don't have them all, but I like to collect them, and the fact that you can test dye colors on armor and mounts even if you don't have them unlocked... well, I've probably put 200gold or so into dyes after finding one that I wanted to have for a certain look.
That being said, the one color I have the most difficult time with is a good solid saturated green.
For red we have Ruby, Imperial Red, Magma, Scorched, etc. Heck, even Spitfire and Strawberry are decent colorful reds
For Yellow we have Incandescent, Flare, Electro Lemon and a couple others.
Orange: Destroyer orange, Sunfire Lava, Golden Lion, etc.
Blue.. wow.. blue. So many beautiful blues to choose from. Phthalo, Zaffre, Sapphire, and so on.
Purple has it's own as well.
But... green? Not so much. We have some great green colors, but there's just something missing.
The best greens I can find are Crisp Mint, Sprig, Green, and perhaps Limette, but none of them seem to approach something like a genuine Chartreuse (#ADFF2F), Harlequin (#3FFF00), Pure green (#00FF00), or Malachite (#0BDA51).
I realize that the material they are used on comes into play, but there just doesn't seem to be the saturation within the available greens that you can get with the other colors.
Soul-binding needs to be allowed to die gracefully. It has expired. It is long past it's time to become a footnote in the history of gaming.