I agree with everyone else, you're never to old for a bag you love, especially at 37 years young. I love both the scribble and the watercolor line. They're so colorful and great for summer! Definitely go for it!
You know I actually see the patchwork and the water color on women vs. the younger crowd which sticks with signature, and they wear it quite nicely, it adds a fresh twist to their look. So I say go for it!