Upon upgrading from v1.0.2 --> v1.0.4 I noticed that the applet looked different. The 'current usage bars' do not look the same as they did in the aforementioned version when I am using the 'Clearlooks' style. If I downgrade to v1.0.2, this is fixed. Steps to reproduce: 1) Start with v1.0.2 and apply the 'Clearlooks' theme: Settings>Settings Manager>Appearance>Style>Clearlooks 2) Set the applet to display 'show current usage bars' and observe how they look. 3) Upgrade to v1.0.4 and restart the applet.
I cannot seem to attach a screenshot so I uploaded the jpg here: http://s14.postimage.org/qiabws5jh/example.jpg
The code in http://git.xfce.org/panel-plugins/xfce4-cpugraph-plugin/commit/?id=8b9f945b6c459dcfd050651ab4bb8371f41505d2 tried to take care of setting the color from the theme but it seems to fail in some situations. I'll fix that...
Should be fixed in http://git.xfce.org/panel-plugins/xfce4-cpugraph-plugin/commit/?id=8149080cd9798f17821b75a6cd532b3ae2a82bf9. Note that if you had 1.0.3 or 1.0.4, a color was saved in its rc file, so to get the color from the gtk theme (ie the default) you'll have to remove/add the plugin from the panel so that it gets a default config.