Per yer Frogger...
I like the Blue look. Since it does make it look like your frogs are floating, why not set them on lily pads?
I'd kind of like to see the blue with the original tire treads just for comparison. Why not do away with the tire treads all together, Put a large frog there instead, and put an illuminated green trackball in the middle of his back? Oh, and use a green ball joystick?