Is there a way to use an image style for the icon instead of just a confined image?

I am trying out the icons for paragraphs and think it could work well, but the icons feel very tiny when I want to convey a complex paragraph - say a masonry style widget that holds 4 items.

At 32x32, this was the best I could do, which feels very very small. When it is in the interface, it is very difficult to make out what it is. I guess that can be solved by using a higher contrast than just grey, but it would be great if the size were closer to 64x64-100x100. Or even, a way to click on the icon, and see a much larger version in a modal.