What happens when you breed the two?

[JacinLarkwell]

I'm not sure what to CALL them ("mixed polish," maybe?) I'm sure they'll look like a Polish in size, shape, and feathering. If they're both laced, then the offspring should be laced as well.

I agree with Egghead_Jr that the daughters will be the same color as their father (silver or gold). The sons will all look silver (dominant gene) but carry gold (recessive gene), so they'll have some gold/red/yellow color bleeding through in places.

Gold rooster with silver hen makes a sexlink cross (gold daughters, silver sons). People don't usually do it with polish, but it's the same genes used for all the common red/gold/brown sexlinks.

Silver rooster with gold hen makes chicks that all look silver, not useful for sexing them at a really young age.

Late thread, but mixed color birds I just call mixed color (breed) so people can't get mad later that this bird didn't breed true. Just what I do personally