Sgraff welcome to YT
the color of the coats are ever changing. I Fancy the darker coats so my male is very dark black and gold one female is very dark black saddle with silver intermingled and gold markings, another is very dark silver with more tan markings and yet another is all mixed

and finally my youngest girl is yet to be determined color and I am hopeful to perhaps show her!
I prefer producing the dark colors over the very light so that is why my girls are what they are. I have stud 2 females recently both boys have dark saddle but one is tan other is silver markings. Litter is due mid june so I am excited to see what comes out!
here is a good site for you to read re; the genetics of the coat and the various colors you can achieve.
http://dandugmore.netfirms.com/color.html
its all very interesting and exciting with each litter to see what your actual outcome will be.
good luck to you, do a lot of reading and ask many many questions...See if there is any YTCA members in your area and call them, ask them if they will mentor you...there are also some very good people on YT that can help....
Its a daunting task picking your breeding stock pick everyones brain then decide what you want to achieve in your breeding program.
have fun good luck