We LOVE the Apple Game at Harmony's House! We mix up our "apples" in a basket, then say, "On your marks, get set, GO!" at which point all the balls ("apples") get dumped!
Then quick as a wink, we all run to pick up the balls and toss them into either the red tub or the blue tub (I wish I had a green one!) according to color. All around, you hear, "Red! Green! Red!" as the children name the colors that they find. Occasionally you hear, "Oops! Wrong one!" Then we fish out the "apple" that doesn't match and toss it in the correct tub.
By far, this is the MOST fun way we have practiced sorting by color and even the toddlers love it and can accurately sort by colors. Yay by for apples!