Discharge in my pregnant cat?

Hello! My cat, Xia, is very pregnant - she managed to get out on July 17th and proceeded to do so for about a week or two, then I fixed the issue. So, she should be having them any day now. She's been showing signs such as nesting(she tried out the box I made for her, my bathtub, and this pile of old clothes I had stashed in the corner of my room) and increased affection. She's constantly trying to reach to her hind end to lick away the discharge that's where, I assume - but my question is, what color is it SUPPOSED to be, and what colors should I be concerned about? Dried, it looks dark brown, since she sat on her tail a couple times and it splotched on the bottom of it. I'm not sure what the consistency of it is since I didn't see it while it was still wet, but that's that. c: Please note that this is her first time being pregnant.

Have you read any of these articles?  The answer may be there.  Does the fluid smell bad?

 [article="29720"]Pregnancy And Delivery In Cats​[/article]  

 [article="31496"]How Do I Know When My Cat Will Give Birth​[/article]