I have a 25 year old cape style home in Massachusetts. I was cleaning the
gutters
recently (in the rain, naturally) when I noticed that the shingles seem to
be saturated
with water.

I'm guessing I've needed new shingles (roofing?) for a while? How can one
tell?
The house was built in 79, so it's 25 years old. Time for new shingles? Any
advantages
of any particular type or color? Can they shingle over the existing
shingles?

The house is a cope type roof with one dormer. 36 X 28 house. Ideas on
pricing?
Any recommendations for good contractors in the north central Ma area?

Thanks
Steve L
Ashby Ma.