Can someone explain why Sencha Toolbar CSS is not working for Chrome?

[boyle]

I have a top docked toolbar, and I used firebug to inspect the element to find the css class, which was: \[code\] .x-toolbar-dark.x-docked-top { border-bottom-color: #000000; }\[/code\]I changed this to:\[code\] .x-toolbar-dark.x-docked-top { border-bottom-color: #000000; background-color: transparent !important; }\[/code\]Now I see the toolbar as transparent in Firefox, but in chrome it still has the default background color (blue). Why does this happen? Maybe I don't need to use this technique here, but there are definitely instances where I need to find a very specific css class using firebug. Any help or information?Note: I tried using the Cls attribute of the toolbar with the same result.