Change Up Your Login Page With These Plugins : Wp Login
joeyo.org -Changing your lock and login screens. There is also a way to change this for Windows 8 Home Edition, though it is significantly more complicated. Pulling up the login screen from the system lock screen will display the various user accounts you can choose from to login. This screen will be referred to as the System Login Screen. The background color on this screen is set independently of any one user account. Just as with the system lock screen, the only way this color can be changed is by editing an advanced setting.
Change Up Your Login Page With These Plugins and Change Up Your Login Page With These Plugins gallery below.