Frogs in the bog: what degree of flutuation In barometric pressure causes a colour change In frogs?

Project title: Frogs in the bog: what degree of flutuation In barometric pressure causes a colour change In frogs?
Overview:

We wish to investigate barometric pressure and colour change of frogs and develop a colour chart to show the change. We will also investigate if the gender/size of frogs influence the rate of colour change.