Green green is the brightest and will last the longest. But It is nice nice to have the different colors to distinguish the front from the rear.
Well basically if you purchase the sights you get free install with a 24 hr turnaround. All I need for the install is the slide, this can be mailed through the post office priority mail for about 5 bucks.
People who prepay online get priority on everything, and if you prepay the sights are 100% sure they will be in stock. In the check out is a special requests section just type in you want the install. Your sights and invoice are put into a bin to wait for the slide.
Sometimes I get a slide out of nowhere that I was not expecting and people who have paid ahead of time get the priority and I may not have to delay the installation a day. Also I get people every day who say that they are mailing in a slide, but never follow through so if I were to set aside all thouse sights I would never have any stock available. But I do make an effort and give 5 days for a slide to come in, after that I cant promise anything unless someone prepays.
If you want to mail the slide in with a check or money order thats fine just let me know and if you send me a tracking number then I know I will be getting a slide so I will set the sights aside for you.