Miniscule color swatches - how to increase the size?

[Graphic Squirrel]

Somehow, my swatches in Adobe Acrobat Pro have wound up in a tiny format.  I can barely see them, and it is nearly impossible to click on the color I want.  I don't know how they wound up that small or how to get them back to their original size.  Can anyone point me in the right direction?  Thanks!

While the image below looks adequate here, compare it to the ruler and you will see just how tiny it really is. (Yes, that is one inch.)