background-color should be backgroundColor

[carousel]

This is from the example page - how to write plugins:

(function ( $ ) {
$.fn.greenify = function( options ) {

// This is the easiest way to have default options.
var settings = $.extend({
  "color": "#556B2F",  // These are the defaults
  "background-color": "white" // it should be backgroundColor
}, options );

// Greenify the collection based on the settings variable
return this.css({
  "color": settings.color,
  "background-color": settings.background-color // it should be settings.backgroundColor
});

};
}( jQuery ));

[alimony]

Or, it could be changed to use bracket notation instead of dot notation in the returned object.

(In any case, this is currently non-working code.)