if there BLUE, GREEN, and RED laser... arent there lazers of colors humans cant see?

Yes of course, down in the Infra Red and below (and then there are MASERs) which only work in vacuum because Infra Red is scattered by water droplets.

Ultra Violet and above are powerful, invisible and dangerous.

Scanners effectively use X-Ray lasers to conserve energy and get a better focus.

Red-green and yellow-blue are the so-called "forbidden colors." Composed of pairs of hues whose light frequencies automatically cancel each other out in the human eye, they're supposed to be impossible to see simultaneously. The limitation results from the way we perceive color in the first place

last questions answer

There are lasers in the infrared and near infrared as well as in the ultraviolet and x-ray region. TV remotes use near infrared light to send commands to the tv set or cable box. There are also microwave coherent sources, MASERs.

There are infra red lasers which humans can not see but feel.

There is something called LIDAR, a technology used, so they say, to survey the earth and get better maps, but I strongly assume that it's also used for military purposes.