when You create intensity curve, open hypegraph and graph editor. From there You'll have to replace current animationCurve node by ramp. Ramp color inputs are managable. You'll just need to figura out distance value conversion network (e.g. setRange, multiplyDivide), since ramp's range is only [0.0,1.0].
Why ramp is good? It visually represents intensity pattern You are making, that's why.
goodluck.