Sorry Michael, but I meant the Zebra stripes ca be implemented via CSS and thought this because I saw many command are with JavaScript and html -- https://en.wikipedia.org/wiki/Zebra_striping_(computer_graphics)

I'm sorry to hear it's something complicated, there are a lot of software that have implemented this kind of zebra stripes visualization, and from Wikipedia it seemed like something someone like you could have done simply, Gaussian curvature also seems like there's a lot didactic material. 
I don't use Rhino because I don't use Windows, otherwise I would have renewed my license

https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.24.3427&rep=rep1&type=pdf

here some screenshot of opensource software with this kind of analysis of surfaces
Thanks anyway I will find other way to do that.







Just to complete my request the zebra stripes could be implemented as a reflection map in Moi3D's lighting system

Greetings