What a colourful week this is.  Today I photographed oil and water. This is a fun challenge.  You’ll need a colourful lighted wallpaper for your background (I used a wallpaper on my iPad).  I used a glass baking dish perched on two cans and slid my iPad underneath the dish.   Make sure there is about 6 - 8 inches between your backdrop and dish.  Pour water into the tray and add about 4 - 5 tablespoons of vegetable oil and gently stir.  The colourful wallpaper underneath will create great abstract images.  If the circles are too big, add a few drops of dish soap.  Change the background image and experiment with colours.  

If this challenge doesn’t interest you today just go ahead and use your imagination and see what rainbow coloured images you can come up with.