Here is another glowing example I made up for you. no bloom filter needed. The first example simply uses the texture map on the disc. The second example increases the glow effect by attaching a glow sprite to each disc.
Take a little bit of this:
And add some of this:
And you get something like this:
Download full source and demo here (click)!
Take a little bit of this:
And add some of this:
And you get something like this:
Download full source and demo here (click)!