I have never used them but it says it comes with 5' of wire for your connections. They require 12V so you would have to get a 12V power supply to use these.
Could probably also use a landscape type low-voltage lighting power supply. (Like for Malibu landscaping lights.)
I know Lowe's carries them.
I use little gels over the leds for any color I wantthanks i saw that but i really would like to get a differt light color like blue or red