Quote - When you are doing the fill, are you still in the Channels Palette?

Yes, I have been working in the channels palette because I didn't know otherwise.  The lesson on alpha channels didn't say not to.

Quote - You should Ctrl-click on "Wing Outside", not just click -- this brings up the crawling ants indicating that you've made a selection around any white areas in the "Wing Outside" alpha channel.

Then, once you have that selection, click on your RGB channel, then your Layers palette tab to go back to the layers, THEN flood fill the selection with purple.

That works well.

Thank you everyone.

Nothing like putting up a lesson and leaving out vital information in order to accomplish the task. 

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi