They were available in the same two colors available on '69 Plymouths. Yellow from the Barracuda and Blue/Aqua from the Satellite.

I don't have the production numbers for all the Plymouth E-bodies so here are the numbers built according to the Mod Top Registry. They look pretty close to me.

Barracuda Blue 26
'Cuda Blue 17
Barracuda Yellow 26
'Cuda Yellow <15

Steve Juliano has a Yellow top Hemicuda and may have acquired a blue top Six Pak car too.

I have pics of a few of them but can only post this one. Sorry.