Awww they look cute.

As for the "self" one. It's not a Self if it has any other markings, it must be one uniform color to be called a Self. It's likely from what you are describing an English Irish. Check out the pic in this link and see if that's what her markings are (great site for all sorts of info other than markings).

http://www.afrma.org/ratmkd.htm#engirsh

Remember to seperate your feeders at 5 weeks of age or before when they are weaned. You don't want rats that should be eating and growing into nice feeders to be wasting their energy trying to mate with their siblings.