Okay, here's a little tip for when you create a theme ...

With the next version, there will be theme X included, this theme uses a template.css.  Other themes, X-Blue and X-Red, are also using the main X CSS template.  I highly recommend also linking to the X theme when making a new theme.  That way you will always have an up to date version by simply replacing template.css to the X directory.  You will need to make some values for the properties !important, to make sure they are always included though.

For a good example of this, check out the new themes.