My bunnies pee a few times throughout the day and evening, but I know other members have mentioned that their bunny will hold it.
As far as the color — That can vary depending on diet, weather, meds etc. The normal range is anywhere from yellow to dark brown and even reddish.
Check out these articles regarding urine pigment:
http://www.3bunnies.org/litterbox_training.htm#color
http://www.rabbit.org/journal/3-1/red-urine.html
What concerns me is the little puddles as if this is a new behavior, then it could be sign of a UTI. Maybe she’s just trying to hold it, but where do you typically find the puddles and how big are they? It could be a form of marking, but since I have dealt with the issue of a couple of little dark red puddles a couple of years ago with Jack,and it was more serious, I am always a bit more hyper aware.
Are there any other symptoms? Does your bunny seem to strain to pee? Is her tail end wet and/or discolored?