Is it a Frog or a Toad?

I was bending over to take a photo of the Azure Fairy Fleabane that started blooming in the mostly shade garden when, all of a sudden, something moved in the grass by my shoe.

As is my routine when startled, I sucked in a huge gasp (hard to describe, but I suck in air while making an odd noise -- anyone who hears it thinks I'm having a medical issue).

Then, I looked a bit closer to see what was moving through the grass. I've never seen anything like it. It looks like a common toad, but it's really bright green like a frog.