Twirl down icons are too small

I have been using Scrivener for several months now and love the program. I would like to propose the icon or arrow to expand a content folder in the primary left side menu bar be increased in size. The little arrows are , IMHO, ridiculously small at present.

David Davis

In an aside, the Right Arrow key expands folders, with Opt/Alt+RightArrow expanding all child items as well.