Nancy offered to let me use some of her iridescent and duochrome paints from Daniel Smith. I was so impressed with her plastic storage paint box.
Mine looks like this
and I must admit I spend a considerable amount of time searching for a tube I'm looking for.
Nancy thought the iridescent paints might work well for a hummingbird painting so I gave it a go.
I didn't like the effect so much on the bird itself and ended up painting it in the conventional manner but almost everything else in the painting has a bit of the iridescent paint.