oil water rainbow

I have a vibrantly colored tie-dye shirt as the colorful area under the glass container. I tried a different set-up today where I elevated the container (a glass bread pan) above the colorful surface and worked outside and bounced light back onto the shirt. The edges of the bubbles have a white glow whereas the image yesterday has a darker edge. I found that there is more dust and other impurities showing up in the water probably just from the breeze. I think I am going to stick to this theme for a bit because there is more to learn and many ways to improve.

Done