Two frogs in my pond

Though one of them is hiding behind a leaf!  If I had tried to move the leaf out of the way I know he would have dived under! 

I find it interesting that frogs can be such different colours.  I think they have a chameleon-like capacity, and they may take on the colour of the place they spend most of their time.  So the lighter one may have been living near a pale coloured mud!