User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0b4) Gecko/20100818 Firefox/4.0b4 Build Identifier: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0b4) Gecko/20100818 Firefox/4.0b4 Firefox 4's theme for Mac OS X is hardcoded to OS X's defaults. While most people do keep OS X's defaults as the system does not provide an easy way to install themes, others like to change it. When changed however, since Firefox 4 is hardcoded to the system defaults, it looks weird (http://imgur.com/lS4Vr.png) Reproducible: Always Steps to Reproduce: 1. Install any Mac OS X theme you like that has different colors or images for the title bar (e.g. http://cristomac24.deviantart.com/art/SnowTunes-iTunes-OS-X-theme-141310715) 2. Open Firefox 4. 3. Look at the title bar. Actual Results: The color scheme used by SnowTunes is not matched by Firefox. Expected Results: Firefox should use the same colors (or images) Google Chrome does match the currently installed OS X theme.

Comparison: Firefox 4 - http://i.imgur.com/lS4Vr.png Google Chrome - http://i.imgur.com/1dyMu.png

Bug 668195 will probably take care of this.

Bug 668195 has landed, can you test this again?

Please use a Nightly from http://nightly.mozilla.org/ for testing.