Usandpets - That logic doesn't make any sense at all, no offense. White hairs aren't uncommon on any color, but having a palomino parent wouldn't make any difference unless it happened to be a palomino roan.
OP, like everyone said, we need pictures to make any sort of comments so I will wait until you have posted them.
Poseidon - That's what we were told by different people. Sheba is a sorrel horse and it's the palomino showing through. One was someone we were trail riding with and the other was someone that breeds palominos. Posted via Mobile Device
*sigh* No it is not "palomino showing through." Palomino is cream on red. You have a red horse if the "palomino was showing through" you would have a palomino. Cream does not hide on red or bay horses.
Here you go!
The right side of her neck has a lot more white but I forgot to take a picture.
Her face looks like there's white hair, but it's actually a blonde/gold color.
I've ruled out the white on her withers being from the saddle.
And she's got white in her mane and tail also.