There is a faint and tactile line that should encircle the power button. The line should delineate the flat suface of the dash from the curved dash surface that bends inward and eventually interfaces with the chromed ring around the power button.

I think what you are seeing is normal.

It has been said:
Hybrid drivers come in 3 flavors, greenie, techie and cheapie. Pick any 2.
2005 Prius, Melinium Silver over gray, package 5 (AI)