Shavehaircut, Replace Rootcolor With Vertex Color

[lwx]

Hi All,
I am using shave & Haircult with maya and using Air to render it. I am using "shaveWriteRib -vc ..." to export rib which is exports Cs which I am using it as basecolor in my shader. My main problem is that I want to use "shaveWriteRib -rtc ..." which exports root & tip color but doesn'et exports Cs.

how can I replace rootcolor with Cs.
While experimenting rendering is getting desaturated means no colors
I am striving to match renderings (one which is taken by VC)with rtc (rootTipColors).
If anyone has the idea please help me on this.

Thanks in advance.
Pravin Yadav