/*didnt make this: loading window bg*/
tabbrowser tabpanels{background:#AAA url("chrome://branding/content/about.png") center center no-repeat!important}

@namespace url(http://www.w3.org/1999/xhtml);
@-moz-document url(about:blank){

/*didnt make this: place a text msg above image*/
html:not([style]):before{display:block!important;font-family:Verdana!important;font-size:1em!important;padding:5pt 0 3pt 12pt!important;background-color:#D4D0C8!important;border-bottom:solid 1pt #333!important;content:"about:blank"!important}

/*about:blank image*/
body:empty:not([style]):not([text]):not([class]):not([onresize]){margin:0!important;background:#AAA url("chrome://branding/content/about.png") center fixed no-repeat!important}
}