Theses are some examples of general markings:
This buckskin shows the classic black points. This picture was donated by Janis Whitcomb
This is a dapple gray, showing the classic round shapped dapples. This picture was donated by Janis Whitcomb
This is a chestnut with a flaxen mane and tail. This picture was donated by Janis Whitcomb
This is a roan horse, specificaly a red roan. This picture was donated by Nell Demyen
This is a stripped hoof. This is from my own collection.
This is an example of primitive markings, such as the zebra stripes and transverse stripe. This picture was donated by Rio Rondo Enterprises