Need Help with Combo marks

I've got plans for a breeder male but im lost on how to get a few of the color marks I need for him or how they are obtained on Wolvden.

Need to know how to obtain:

Sterling

Silver

Zircon

Are they combo colors only or are the RMA colors?

I believe that these combo colors can be bred or applied through RMA, since there are lots of first generation wolves with them. There's a guide that mentions the known combinations and how to get them here, if you get curious about others too!

• Zircon = Red x Cream | from the guide and from what I can tell from existing pups in search, it seems to come from Red x Cream. Examples: here, here, here.
• Silver = Black x White | Examples: here, here, here.

Unfortunately, I couldn't find any solid examples of Sterling combo pups. Maybe some will come up soon!

Awesome thank you. 

No problem. ^^ I wish you luck with your breeding!

I hope so its a huge project so I hope I can figure out what makes sterling so I can get started on the pair of wolves ill need to hopefully breed him.

Sterling is speculated to be silver x black, BUT this would require some testing to actually see

Ok thank you