This is a great idea!
I have seen so many eggs roll off of those egg holders that come with the coloring.
I have seen so many sad little faces when that happens.
This could solve that problem nicely. I suppose it could still be tricky getting them out of that whisk though. Adult supervision is not all it's cracked up to be. (Ha Ha, no pun was intended.)
This is another great idea I found on Spiritually Speaking.