In the case of the appy mare with high whites, it’s simply a combination of the right expression genetics coming together, and/or the lack of suppression genetics. You say the dam had no white legs - any face white?
[QUOTE=JB;6951034]
In the case of the appy mare with high whites, it’s simply a combination of the right expression genetics coming together, and/or the lack of suppression genetics. You say the dam had no white legs - any face white?[/QUOTE]
Attached are the best photos I could find of my mare’s sire, dam (with her as a foal), and her (as a 4 yr. old). It looks like her sire DOES have some white on his legs but not much, can’t tell if he has a star. Dam has a star. Yes, Patoka is a few spot but (in person) you have always been able to see her stockings. About the time she turned eight or nine she started “reverse roaning”, I’ve only came up with a couple of references to it online, she’s getting ticking everywhere she has dark skin. Every spring she sheds out slightly darker, she’s registered as a blue roan fewspot but she’s” roaning in” as a dark bay with four white stockings and a snowcap blanket. None of her original black spots have changed or her “lightening marks” on her legs.
http://i124.photobucket.com/albums/p21/michelletjk/WapSpotWho-Ad-1_zps40dee33b.jpg
http://i124.photobucket.com/albums/p21/michelletjk/Patoka2002-1-1-1_zps3b4e8f74.jpg
http://i124.photobucket.com/albums/p21/michelletjk/0412091548-2_zps5720e1b5.jpg
Sorry to hijack the thread! 
ETA: Patoka’s dam isn’t ribby in the photo, she actually has “stripes”!
This is such an interesting thread!
[QUOTE=poltroon;6950278]
The Equine Tapestry blog has lots of great information about colors and how patterns can interact. I think OP may especially enjoy this page of tagged articles:
http://equinetapestry.com/category/sabino/
This is an article about anomalous little white spots:
http://equinetapestry.com/2013/01/24/little-white-dots/[/QUOTE]
And I recommend her book, too (more are in the pipeline).
[QUOTE=harvestmoon;6953095]
And I recommend her book, too (more are in the pipeline).[/QUOTE]
Definitely. The Equine Tapestry is terrific and contains a lot of historical insight about breeds and breeding, like the tidbit that you can tell the current dominant color of a breed from its mare base, and the trendy colors from the stallion base. She’s been researching the deep history of breeds for some time, and has collected a stunning amount of information that is not always in tune with the conventional wisdom we grew up with. If you ever have a chance to hear Lesli Kathman give a talk, I highly recommend it. I’m quite looking forward to the next book.
(disclaimer: I’m a longtime member of her fan club. 
)
