They are called Turkish Van markings when they just have a little color on their heads and tails.
Here is a link that gives a lot of info and some photos too.
http://www.cfa.org/breeds/profiles/a...rkish-van.html

I can't remember if Jen said what breed her mom cats were, it is possible they have some Turkish Van in them.
If you scroll down in the link I posted, it mentions other cat breeds with the similar colored markings.
Richard, you don't even need to make up a joke about Turkish Vans, the link does that for you too.