Hello you can change the colors directly on your demo page. Can you download the css files somewhere for a direct change of color? I don't have the programs to change the css files directly except to change every color, which is pretty annoying. I am particularly interested in the color code from the On Demand green from Gaia.
there are prepared css files, that switcher on demo just switching between them.
You need to change css file name in theme.php.
But if I remember correctly, it's enough just to find that pink default color and change it to green in default css
Just look in theme.php, look for e107::css() and find how needed css is included.
If you don't understand, let me know. I need to install the local version to show you more details.