blue-twilight/app/Providers/AppServiceProvider.php

<?php

namespace App\Providers;

use App\Facade\Theme;
use App\Helpers\ThemeHelper;
use Illuminate\Support\Facades\View;
use Illuminate\Support\ServiceProvider;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        $this->app->singleton('theme', function($app)
        {
            return new ThemeHelper();
        });

        $this->addThemeInfoToView();
    }

    /**
     * Register any application services.
     *
     * @return void
     */
    public function register()
    {
        //
    }

    private function addThemeInfoToView()
    {
        $themeInfo = Theme::info();
        $themeInfoKeys = array('name', 'version');

        // Add each valid theme info element to the view - prefixing with theme_
        // e.g. $themeInfo['name'] becomes $theme_name in the view
        foreach ($themeInfoKeys as $key)
        {
            if (isset($themeInfo[$key]))
            {
                View::share('theme_' . $key, $themeInfo[$key]);
            }
        }

        // Also add a theme_url key
        View::share('theme_url', sprintf('themes/%s', Theme::current()));
    }
}