Search Box in Header now is now the same color (few shades darker) than the actual Header color.

The latest release in OnDemand has changed the color of the search box in the main cross navigation header. It is a few shades darker than the main header and will update if you change the header color. However, it is hard to distinguish that it is their, and was much more distinguishable when it was white before the latest release. Can we either make it white again or provide an option in the look and feel to change the color?