Change wrapper color

Template modifications require a Full Template Download first.
Dashboard, Manage:Layout, Edit Html, Download Full Template and you
will have a backup on your computer.
Changes are made right on that page, in the template editor. 

Find:
 #outer-wrapper {
and add:
 background-color: #f5f5f5;
or some other color. 

Save and view. 

There probably are alternatives, like picking out the columns and
header and just changing those. 

 #header-wrapper
 #main-wrapper
 .sidebar-wrapper
would be a good start. The frogs will show through in the space
between the columns, but the backgrounds will only be behind the
content, so you will have three different height backgrounds.

Similarly add it for rbar left abr and main bar

Next -increase slider width