Bring a flat part of the bike to any automotive supply shop that sells auto body supplies and makes up paint. or as we have a shop that sells all the supplies to body shops.
They use a camera and take a picture of the color and it gives them the paint code and they make the paint.Most will even make it in a spay bomb if your not using a spray gun.I have done it several times.
Just shot and cleared my front Connie fender with a spay bomb and clear coat.