Usergroup post background and Hide post vb4.1.12

[spaceevo100]

VBulletin 4
Version: 4.1.12

Hi there, I was wondering if someone could make me a modification which can allow different user groups to have different post background colours. So basically when an administrator makes an post the background would be red and when a normal user posts it would be the default style.

Hide mod (This was an old smf mod but idk the link....)
For the hide mod I want it to allow the administrator to select would group can use it and then on the post a button is there with the option "Hide post", when the user clicks the button it will ask you to give a reason to why its hidden and this reason will be disabled for those who do not have rights to click the "Hide post" button but the administrator sees the reason and the content of which has been hidden.

Thanks