I bought one off amazon. Colortune brand but design is a little different than that.
What I realized is you really need a dyno or something to see how the fuel mixture/spark is behaving under load, otherwise it's just higher revs on the center stand and not accurate throttle positions on the road.
Hard to see and a little hard to use, but I do dig the concept. Maybe someone else can chime in with better ways to use em