Phishing Protect by Keul125

Once installed, when loading a page in a tab, the background color of the address bar input will change if the domain of the current URL doesn't exist in the bookmarks.

First version so it could still have bugs (keep current bacground color when displaying special pages like "about:" or just opened new tab if previous tab wasn't in bookmarks)

Next things to come:
- customization (like to be able to choose the color or even what theme element to change)
- whitelist button, to add a website in a list without having to add it in bookmarks
- maybe an ability to add the most common websites