Maddie

Ok so last Wednesday I got this beautiful chestnut syrian hamster called Cinnamon from 'Pets at Home'. He is around 2 months old and is still on the pets at home food he was originally fed at the store. I brought him home in a russian dwarf cage but a week later I bought him the Critter trail x extreme hamster cage;

http://www.myposhpet.co.uk/small-animals/hamster-c...

A bit later he started to nest in his wheel and he now sleeps in it which I am fine with. A few days ago I realised his pee is actually coming out PURE white but when I clean it with tissue paper it looks yellow. Is this normal? I've searched the internet and it says its normal but I want to know WHY its white. Is it what he's eating? Is it do do with his health? Is it an illness? Is it stress? Is it something thats meant to happen? Please help I am in love with him and I am so worried!!!! :(