I just picked up a G19 G5 FS. it has the plastic sights. looking to get a set of night sights for it. I have a G45 with amer-glos. not overly impressed with those. looking at glocks own night sights. never had a glock with those. are they good or ? looking for opinions on them. I think they are green ? where is the best place to get them, if I decide to get them. thanks for any advice on them. also looking at night fusion.