Cope's Gray Treefrog/Eastern Gray Treefrog

Yes. They can come in a variety of colors. It gets more complicated again in areas where the Bird-voiced Treefrog (Hyla avivoca) may also occur - south of where you saw these frogs. One way to differentiate between the gray treefrogs and the Bird-voiced treefrog is to look inside the back leg; the gray treefrogs have bright yellow/orange color inside the thighs; the bird-voiced doesn't have the bright coloration.

Nice frog! In this location, it could be either Cope's Gray Treefrog or the Eastern Gray Treefrog; Hyla chrysoscelis/Hyla versicolor. These treefrogs look identical; they can be differentiated by call (but it's past breeding season) or by DNA studies. http://www.amphibiaweb.org/cgi/amphib_query?special=maps&genus=Hyla&species=versicolor&photos=yes http://amphibiaweb.org/cgi/amphib_query?special=maps&genus=Hyla&species=chrysoscelis&photos=yes