Just driving about and I am astounded at the number of black or dark coloured roofs on homes. Especially up in tropical Queensland !
Dark roofs are great solar collectors and heat up very quickly in our hot weather, We had a dark brown tile roof in Maroochydore that would scorch skin off if you tried to walk on it on a hot sunny day.
After we repainted it off white not only was the house much cooler in summer and the same heat in winter you could walk safely on the roof in almost any weather.
Somewhere I heard a figure that if all roofs were white the reflected heat would drop the worlds temperature by a degree !
If you are planning a roofing colour think about choosing a light coloured one ...... please !