I don't have either, but based on the common colors for the golden 300's (black bibbed, chocolate bibbed, nutmeg mallard) crossed with white you would end up with mostly mallard or black bibbed colored ducklings.
We just hatched one yesterday, it's a solid yellow duckling with orange beak and feet. The pairing was a Pekin drake to a golden 300 female. I'll try to remember to keep you updated.
It is a much bigger duckling then the pure Swedish being incubated with them.