Mage WP Login Page Designer is an awesome wordpress plugin for WordPress default login page design. You can totally change the login page by this plugin. Here is the features list:

• Logo Change
• Custom Animation
• Login Page Background Image/Color
• Login Form Background Image/Color
• Unlimited Button Color
• Unlimited Text Color
• Registration Page Background Image/Color
• Registration Form Background Image/Color
• Forget password Page Background Image/Color
• Forget password Form Background Image/Color
• Custom Footer.
• Form border and unlimited border color
• Live Demo