Thanks everybody!!!
I know that a picture's worth a thousand words, but so far I haven't seen how to post pics on the forum, so I'm going to try to describe my little ladies to see if you think thery're roan:
I have a little mare whose winter coat was dark charcoal with medium silver mane/tail. Dark face but the lighter mane/tail don't seem to fit the pattern. When clipped, she had a very light dove colored undercoat with large charcoal spots on her rump- now grown into charcoal with lots of intermingled white hairs.
I also have a mare that when clipped out was a light almost pink color. I think the combination of silver and sorrel makes her look pinkish mauve when newly clipped. She also clipped out to have appy looking spots which almost are all gone when her hair grows out. (She also has a mustache, wide blaze, and a big sorrel spot on one leg) I'm not sure what color she is but looks like a little haflinger in the winter!!!
Thanks for taking time to read all this. Do these sound like roan characteristics to you??