Changing Chrome app (not browser, but app) from blue to another color?

Changing Chrome app (not browser, but app) from blue to another color?

You can skin Chrome, but how can I change the default blue top bar color in Chrome application shortcuts? I mean the thing that turns a web app into a pseudo desktop app, reachable via Page menu -> Create application shortcut. For some reason it ignores my theme settings... I just want to turn it from light blue to dark blue or something on Windows.