It's hard to tell if your existing walkway is nice bluestone or cracked concrete. If the former, you can put a brick border on it, which would tie to the brick.

Cute place! The overgrown landscaping needs some attention so we can see it.

Sage green house with white trim. Cedar stained porch, steps and rails. Brick walkways lined with seasonal flowers.

It is a darling house! I agree with the idea of a green/sage color. Like your thought of a brick walkway if you can match your foundation brick. Maybe metal railings on the steps. Love your trees, too.

Here are a few suggestions:

Such a charming house!

What do you think about something other than black or white for the trim?

Maybe not exactly these, just an example:

Joanna Gaines famous fixer upper

Sage green with cream trim.

I just love the picture with the white house and all the green trees. I'd worry that a green house would get lost. I'd keep it white or do a sunny yellow.