The problem is that if Windows XP is given the old nativescrollbars.css instructions for scrollbars, a black border appears around all of the scrollbars if it is using the “new” cartoonish Windows XP desktop (as opposed to the old Windows 2000 style desktop). On the other hand, if Mac is given the old xulscrollbars.css scrollbar instruction the scrollbars are totally missing.

The only solution I could come up with that still allowed me to deliver a single theme file to all OSes was to develop custom scrollbars. I did file a bug report on this back in March on Bugzilla (see https://bugzilla.mozilla.org/show_bug.cgi?id=423780). Maybe if enough theme developers vote for this bug on Bugzilla this scrollbar issue will get resolved in Firefox 3.1, which would make cross OS theme development much easier.

I realize that Windows XP is no longer the most current windows release it’s but the felling I got was that the work done was “hackish” instead of a “proper” solution to getting color and styles from the current theme wasn’t implemented and instead some hacks were used. At least some kind of classic/themed separation.

After hearing so much about “visual integration” it’s ironic that certaind widgets still don’t look right, the flaws of open source I spose, nobody want’s to do those anoying bits that give that extra polish.