Smokie is the rat we have now. She's solid brown with white feet. Her favorite thing to do is sit in one of the cubby holes of the roll top desk I work at and nibble sunflower seeds. When she's feeling precocious, she'll jump down and prance around the keyboard for a while or wrestle with the computer mouse. She's in her later years and has developed a common respritory ailment for rats.
Rats are alot of fun.
If you handle them alot they will become quite friendly. They will curl up and watch TV with you or they may sleep in your pocket. They are always curious. This makes them a little mischevious at times but that's part of their charm.