Hi seanoss,
any pics of the top? They are probably Victa's best looking top shape. Ahead of their time.
They are not easy to find these days, but are out there.
I am slowly releasing repairing a cup starter top from a 70s high arch mower. I have bogged and sanded the cracks ready for a paint. I've decided on Rustoleum 2X satin hierloom white which sits somewhere between full white and beige. I think that ones would work on the white sports cover as well. The good thing is primer is not required so if some paint comes off, chances are the original colour underneath will disguise it.