User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:8.0a1) Gecko/20110813 Firefox/8.0a1 Build ID: 20110813040211 Steps to reproduce: Any nightly build after the 10th the -moz-apperance property can't be overridden, nothing that the -moz-appearance specifies can be changed. The attached testcase should show the DIV with the aqua color, but instead shows it as a toolbarbutton. Regression range: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=87e3ea12ed5d&tochange=04dfb49d3a3d Looks to be caused by bug 672050.

3rd try, this should treat the .html file as text/html otherwise run the testcase locally.

(In reply to d.a. from comment #0) > Any nightly build after the 10th the -moz-apperance property can't be > overridden, nothing that the -moz-appearance specifies can be changed. Well, that's how -moz-appearance works. What are you trying to do here? The only thing that has changed is that the Mac theme now supports the "toolbarbutton" value for -moz-appearance. If you change your testcase to use -moz-appearance: radio, for example, you'll see that the behavior you're criticizing has existed for a long time.

You can remove the appearance styling with '-moz-appearance: none;' and then set any background you want, though.

Resolving as invalid.