THATS CUTE!! 
It felt like a nintendo DS multiplayer mini game haha! Good memories!! I think the color signal UI should have been more obvious, or replaced by something that takes the full screen. All the information shown on the screen are not really important when you are playing! So you could have a border of the color of the frogs and a big text in the top center that says “Waiting for signal…” then “CATCH GREEN FROGS”! when it picks a color.
Nice little game otherwise!! Congrats on your first wild jam!!!