I have 40+ years' worth of tools accumulated but I'm the only one who can find most of them in the garage. But I used the caulking gun (it didn't seem harder than normal) and got all the white colored...including a few spots where I had laid my hand on the shingles and left white caulk marks. They're brown now and blend in perfectly..
I use all the garage, including the ceiling. In the third picture below, you can see a black car top carrier mounted in a rack next to the ceiling. A perfect way to avoid using space where we need to walk and move things.
I recently added ceiling-hung led light fixtures in front and half-way back - I only have the front ones on in this pic. They really do light things up.