they might be getting old or the humitiy
All of the different colours seem to be the difference between the grey, white and brown mice...
Mice can be 4 colors - White, brown, Grey and black
In John McCains pants
the color
I think the only you can do is dye the hair to the color you want
Leopard geckos can turn grey due to shedding their old skin, which is a normal and healthy process for them. This shedding helps them grow and stay healthy.
The answer is 40
Gray with a white stomach
deux souris grises
smoky,the color of the smoke is grey:)
In 'The Witches' by Roald Dahl, the witches want to turn all the children in the world into mice. They view children as revolting and believe that turning them into mice will rid the world of their presence.
Get grey hair dye or just let it turn natural grey.