IMO, Color does matter.
From my experience, animals can obviously see the red light spectrum and will look right at the source the second you turn it on.
Not so with green. They seem to pay no mind at all to green, and will just go about their business.
protec ( model LG170 ) makes a barrel mounted green laser light that works great. Comes with barrel mount/clamp, and optional pressure switch on a cord with velcro, or standard rear button switch. With a decent scope, You can see to shoot almost 200 yards at night. Rural king, and a few others sell them for about $45.
Good luck, and good hunting.