Since you have painted front and rear fenders, I would go with something subdued vs the current bright yellow.
I painted my Moto Guzzi cafe a vintage looking blue and did a Yamaha brat bike for the wife in a darker matte blue. Since it isn't a nut and bolt restro, pick something unique. Make it your own.
I would look at Singer Porsches for inspiration.
http://singervehicledesign.com/works/

I was out riding and saw a cool color on a new VW bug and painted my bike to match.

