There are no incompatible colours as such - it all depends what outcome you are after - as diverse as possible, a specific colour goal etc. There is absolutely no problem breeding any colour to any other colour. Patterns and Coat Type are the only things you need to really worry about - namely Satin (sa) and Anophthalmic White (Wh), also known as Roan. Breeding greys into black lines is not recommended purely for aesthetics, and mixing umbrous with black tends to make them brown a lot quicker. There are a couple more but those are some off the top off my head just now
The main consideration with her golden would be what recessives it carries, it may be an excellent match to produce a nice diverse colour range of babies. It is highly unlikely, though not 100% impossible she may get 100% golden pups, but umbrous from her sable would make some umbrous golden at the very least.
The importance of knowing their gentic background, health, temperment and age should be the overriding consideration, not colour ultimately.