functions.php

<?php
/** Load the Core Files */
require_once( trailingslashit( get_template_directory() ) . 'lib/init.php' );
new Contango();

/** Do theme setup on the 'after_setup_theme' hook. */
add_action( 'after_setup_theme', 'contango_theme_setup' );

/** Theme setup function. */
function contango_theme_setup() {

    /** Add theme support for Feed Links. */
    add_theme_support( 'automatic-feed-links' );

    /** Post Formats */
    add_theme_support( 'post-formats', array( 'aside', 'audio', 'chat', 'gallery', 'image', 'link', 'quote', 'video' ) );

    /** Add theme support for Custom Background. */
    add_theme_support( 'custom-background', array( 'default-color' => 'e9e9e9', 'default-image' => '%s/images/bg-pattern.png', 'wp-head-callback' => 'contango_custom_background_callback' ) );

    /** Set content width. */
    contango_set_content_width( 580 );

    /** Add custom image sizes. */
    add_action( 'init', 'contango_add_image_sizes' );

}

/** Adds custom image sizes */
function contango_add_image_sizes() {
    add_image_size( 'featured', 200, 180, true );
}

/**
 * This is a fix for when a user sets a custom background color with no custom background image.  What
 * happens is the theme's background image hides the user-selected background color.  If a user selects a
 * background image, we'll just use the WordPress custom background callback.
 *
 * @link http://core.trac.wordpress.org/ticket/16919
 */
function contango_custom_background_callback() {

    /* Get the background image. */
    $image = get_background_image();

    /* If there's an image, just call the normal WordPress callback. We won't do anything here. */
    if ( !empty( $image ) ) {
        _custom_background_cb();
        return;
    }

    /* Get the background color. */
    $color = get_background_color();

    /* If no background color, return. */
    if ( empty( $color ) ) {
        return;
    }

    /* Use 'background' instead of 'background-color'. */
    $style = "background: #{$color};";

?>
<style type="text/css">body.custom-background { <?php echo trim( $style ); ?> }</style>
<?php
}