new outside paint or not?

[Jeff L.]

The property was painted 4-5 years ago, and still in fairly good condition, do you think doing some touch up and repainting the window trims would be better than repaining the whole property?

Also what color to paint if roof is this shingle?

Owens Corning 25-Year Supreme Desert Tan 3-Tab Asphalt Roofing Shingles

I also wonder if new roof is needed or not if the roof is 15 years old, and seeing it's aging on the edge of the roof.