There are plenty of themes that can give your website a professional makeover. In most cases, you will have to customize your login page on your own to achieve a consistent experience across all your pages. Loginstyle is one of many plugins you can use to do just that. It comes with a bunch of pre-made templates to get you started faster.
Loginstyle for WP is responsive and ready for Retina displays. It comes with 5 background styles and fun effects to make your login page more dynamic. Webmasters also have the option to use their login page to promote their social accounts. Google reCAPTCHA support is built-in.
Loginstyle lets you customize logo, background, fonts, colors, redirect URL, and everything in between. This is a paid script by archtheme.