Adding a CSS file which isn't in your custom theme to Layout xml file

Question

We have a stylesheet that is present in a theme from an old website, since we want to keep the same overall template files but only change styles, we want to keep the old stylesheet and add another stylesheet in a new theme to override some colors and such.

E.g.

Old Theme

/skin/frontend/oldtheme/css/style.css

New theme

/skin/frontend/newtheme/css/style.css

Layout XML

<action method="addItem">
        <type>skin_css</type>
        <name>css/style.css</name>
        <params/>
</action>

Since the theme has been changed to a new theme, only the new stylesheet will be loaded and not the old one. I was wondering if there is a way to directly reference a CSS file that's not in the currently used theme.

I tried this:

<action method="addItem">
        <name>skin/frontend/oldtheme/css/style.css</name>
        <params/>
</action>

But it doesn't seem to be able to reference the old theme's CSS file.

Is there a way to directly reference a CSS file with a longer path?

Thanks

Answer 1

I figured it out:

1. Extend my old theme in theme.xml of new theme.
2. Create a new css file in new theme with a different name i.e. new_style.css
3. Add the new css file in the layout.xml