There are at least three versions of the colored eargels. The easiest way to describe the difference between them is to give the color of the large gel. One set has a purple gel that has the "flaps" around the opening that goes on the speaker, another has a grey large gel, and the third set I've seen has a green large gel. I have all three sets. There may be more, but I know of these three.

Also, in case anyone is interested, I was at my local Sprint store and they had the SE HBH 608 there!