Looks like you put a lot of effort into this patch; it is very appreciated.

I found a few regressions when testing your patches:

1. the scrollbars are very thin. I would revert to the previous code for them, since they look thicker and also include the "handle" in the slider
2. the toggles were switched from checkboxes to radioboxes. I think a checkbox better illustrates the on/off status of a toggle than a radiobutton, so I'd remove the new Switches (to be used in menus) block
3. the panel labels for the Embedded and Royale variants now show black text, which is hard to read, and doesn't follow the original white text of both themes.

Otherwise, it looks good to me, and ready to be merged once these issues are fixed.

As far as I can tell now, all the issues are fixed, only thing I couldn't figure out is that on the normal Royale theme the clock text is body. Its supposed to be black, but not have the shadow.

For Royale, you may look into the applet.js section (line 1998), and change all the color: white/#fff lines to color: black. To remove the bold font, edit the .panel-button class and remove the font-weight: bold line.

A few other bugs have appeared:

• Text alignment varies if an applet is hovered or not (ex. multiline clock label). You could standardize text alignment across variants by adding text-align: center; to the .applet-box class
• the run dialog text being white. It should be fixed by changing lines 1089-1090 to

  color: black;
  caret-color: black;

• some notification text is white on light yellow, so unreadable. You can test this yourself by sending a test notification with notify-send "hello-world" "some body"
• I don't know if it's intended, but icon spacing in the right panel has been reduced in all variants, except Zune and Royale Dark. If it's intentional, could you apply the changes to them as well? If not, revert padding changes to the other variants.

Sorry for the long delay, life has been happening, I will work on this.

ALSO: After some testing, the title bars on Cinnamon's UI are too tall; Windows XP's title vars were 30 pixels by default. Would you know how to fix that?

I have almost everything worked out now, I'll publish a commit later today to address the last standing issues I can see.