Changing Background Color / Inserting Image in OBIEE Dashboards

.PortalBody {
font-family: Verdana, Arial, Sans-serif;
font-size: 9pt;
color: #3c3c3c;
background-color: #FFFFFF;
margin: 0 0 2px 0;
border-style: none;
}

you can also set background image if u paste the following code in .PortalBody.

.PortalBanner {
margin: 0px;
background-position: top left;
background-image: url(bg_banner.jpg); /* DO NOT REMOVE RTL-ONLY: background-rtl-image: url(bg_banner.jpg); */
background-repeat: no-repeat;
background-color: #1765AC; /*095BA9;*/
width: 100%;
padding: 0px;

Until Next Post...Keep Smiling :)