Tiny Green frogs on lawn

[TJ]

I live in western New York state. On my front lawn I sometimes find tiny green frogs. They are about 3/4 inches long and solid green. I looked in my field guide and the only thing that came close is the Mink frog, but it seems to be somewhat patterned. What are these little frogs?

 

[joan]

Tree frogs, Hyla versicolor complex. They can be highly variable.

 

[sandy]

can you put a picture up? and are they legal to keep? thank's sandy have you caught any?