Although set to front and color-drawable in the Designer, a panel does not appear to z-index over views based on images. Is there any means to force a panel over all other elements?
I think I understand. You added a panel in the designer and then added an ImageView by code.
Views that are added later will always be in front of previous views.
With the new Core library you can call View.BringToFront to change the zorder in runtime.