So I just received my Ameriglo "Agent" sight set (for Glock 9mm) with "sig green" front sight hoop (part # GL-952).
Be forewarned... this are NOTHING like sig green sights. My set (the usual triple dot green tritium capsule, with "sig green" hoop around front sight) appear more yellow than green.
I have Sig's with night sights, and their green is REALLY green (like fresh cut rainy season summer grass). These are not even remotely close (I'm not sure which blind person declared them "Sig green"?).
Had I known this, I would have opted for the (slightly) cheaper orange front sight hoop option (the standard FBI set up "agent" sights), since it wouldn't match any of my other firearms anyway.
I hoping to keep things "similar". My Glocks wear TFX's with green hoops. My Sig's are Sig night sights (the REAL "Sig green"), so wanted to stay with the green front hoop theme.
I did NOT get that with these. Again, these are more yellow than green. Rather than have to adapt to yellow (now), if I had known that, I'd have gone with their standard orange (pops more than the yellow) since I'd have to adjust to a different color anyway.

So... to wrap up... don't bother getting the "sig green" Agent sights... they are NOT sig green, so you may as well opt for the more eye catching orange.