Dynamically switch file in get_template_directory_uri() | Function

I need to switch scheme color of my WordPress theme trough Redux option panel.

My plan is switch the CSS file trough get_template_directory_uri() | Function.

The scenario is:

1. Create 2 scheme color: dark and light with dark.css and libght.css.

2. Control from redux panel with this code:

   ?php
   Redux::setSection( $opt_name, array(
    'title'  = __( 'Color Scheme', 'javapaper' ),
    'id'     = 'test_scheme',
    'icon'   = 'el el-list',
    'fields' = array(
        array(
            'id'       = 'color_scheme',
            'type'     = 'image_select',
            'title'    = __( 'SELECT Color Scheme', 'javapaper' ),
            'subtitle' = __( '2 scheme Available', 'javapaper' ),              
            'options'  = array(
                'dark' = array(
                    'title' = 'dark',
                    'alt' = 'dark',
                    'img' = get_stylesheet_directory_uri() . '/images/header-styledefault.png'
                ),              
                'light' = array(
                    'title' = 'light',                 
                    'alt' = 'light',
                    'img' = get_stylesheet_directory_uri() . '/images/header-style2.png'
                )                   
            ),
   
            'default'  = 'dark'
        ),          
   
         )
     ) );
   ?   
   

3. Call the code from Redux panel into get_template_directory_uri() | Function like this:

    wp_enqueue_style( 'javapaper-lightbox-style', get_template_directory_uri() . '/css/$redux_demo[color_scheme]' );  
   

But Unfortunately It did not work. I am newbie on php. Please help.