This is from Dana Krempels on urine scald, but also discusses the color of urine:
http://www.bio.miami.edu/hare/urinary.html
This is a discussion from the HRS on red urine:
http://www.rabbit.org/journal/3-1/red-urine.html
Congrats on the new NIC cage! I would limit your resources for rabbit info to a few reliable ones and do not use a search engine until you are pretty well-versed in rabbit care and whatnot. If you are new, and use a search engine you will come up with all sorts of conflicting information and such as it doesn’t discern between what I would call good, sound information and just plain garbage. It can be very confusing indeed.
Try these few:
https://binkybunny.com/Default.aspx?tabid=53
http://www.rabbit.org
http://homepage.mac.com/mattocks/morfz/rabrefs.html
This is a listing of answers from Dana Krempels, a very rabbit savvy person who is not a vet, but is respected for her knowledge and advice on rabbits. When I search this page, preass your CTRL + F fey to bring up a “find” dialog box, type in key words of what you are looking for and it will find it for you. It can be a little daunting, so I am just offering it as an option.
http://en.allexperts.com/q/Rabbits-703/indexExp_35789.htm
I also just wanted to let you know that of course, ask all you like here, we’re all very happy to help and you’ll get some good, sound input/advice. Also, a lot of us have our resources where we look up things and post the links for you so you don’t have to go searching all over for the right answer. 