Spring Peeper?

I am mainly looking for verification that this is a Spring Peeper. It was inside the toy box (that they thought sealed up pretty tightly) sitting on the edge of a tennis racket. About 1.5 inches long as it is pictured. The search that I did for Spring Peepers showed many that were similar in markings, but I thought I would check here as well.

Grey Tree Frog (Hyla Versicolor)

Thanks! I will pass that info along to my grandkids who found it when they opened the toy box. I should add that the toy box was one of the big plastic ones and was outside the house. : )