I`ve tried emerald green from pyroguide, but I think the color is quite washed out and not
I found emerald green to be a very nice green. Also they are easier to light compared to nitrate-only stars.
Maybe they are not properly dried, that might cause them to look washed out.
Another green I would choose is Hards Green Star #5. A strong hotprime is recommended.
On Skylighters are two
primes indicated, which one is better?
As far as I understood, this is a to step system. The perchlorate prime is hotter, but needs to be primed itself to ignite under any circumstance. Thus a layer of the BP based prime is applied on top of it. And to be really sure you can dust them with a thin final layer of normal BP.