Thanks a lot for choosing one of my photo! Of course, this macro has been done by many other persons than me, so it is not my 'property' by any mean, but I really like how you tried to match the colors and shapes I obtained at the time. Regarding the depth of field, it is always very hard when it comes to macro shots. I remember that instead of photographing a real bubble, I used a piece of metallic wire that I bent to create a rectangular frame. When put in the soap, the frame would create a film, hopefully flat, that you can photography with everything in focus. Still tricky, but that helped a bit!