In your templateDetails.xml, paste this codes
And then on index.php file, you will need to call this param function, paste this codes at the top of your index.php page, inside the php
$templateparams = $app->getTemplate(true)->params;
and in order for the css code to function call it through adding this code inside the head tag
<link rel=”stylesheet” href=”<?php echo $this->baseurl ?>/templates/<?php echo $this->template ?>/colortheme/<?php echo $this->params->get( ‘theme’ ) ?>” type=”text/css” />
Please note that you will need to add different color style on each css files that been added, for it to take an effect and to select the color theme, you have to login to your administrator and on template manager select your template and you must see the color theme option at the right side area.
Hope this helps.