I've taken the bubble and have made modifications. It should now look like this:
https://www.dropbox.com/s/jrm8gqhntta1nyi/bubbles.jpg
Here is where you can find the max file and image files:
https://www.dropbox.com/s/4t1h44mvlufxdez/Bubble.zip
If you look in the material, you can see the adjustments I've done. Here's the an image of how I adjusted the material:
https://www.dropbox.com/s/vou5tz7oax...bubble_mat.jpg
I hope that helps out and let me know if you have any questions.