How can I create a custom Admin theme for WordPress starting from a HTML template.
Also how do I ensure that it works with future upgrades to wordpress- how do I create a plugin that specifically tests my custom Admin skin with a newly released WP version
(3) How do I set it as default admin theme which child site users in WPMU cannot change? And that remains the admin theme even after WP upgrades to next version?
(4) How do I create a plugin to set a WP Admin theme created by me as the default admin theme for all child sites–> that child site users cannot change themselves? And that remains admin theme even after WP upgrades to next version?