[RE-wrenches] Personal project: roofing colors

[William Miller]

Friends:

I have an energy question on a personal project.  We are adding two rooms 
to our house and it is time to select roofing colors.  Nothing will match 
the weird comp shingles already on our roof, so we are going to not match 
and re-roof the rest of the house later.  In the meantime, I need to pick a 
shingle color.  How much difference does a lighter roof color make here in 
our inland California (Mediterranean) climate?  We get over 100F frequently 
in the summer.

Thanks for your insight.

William Miller