So I'm planning on getting a Glock 19 Gen4, and one of the few upgrades I want to do is get night sights on it. The question is what brand and color. I feel close to Trijicon because of playing video games and using ACOG sights (made my Trijicon), but I don't know whats the best for the money. I also want to get them in blue but I haven't found them anywhere. I've heard its because the blue ones are really dim and the tritium doesn't seem to last as long. Does that mean that I cant get them then? Is it better to get the front and rear sights in different colors, I assume its for faster target acquisition.