Client need 4 new designs of template.
All 4 designs will use the same HTML.
Only graphic files from CSS will change.
Right now it is blue.
You need to open graphic files in Photoshop and save it with different colors.(green,purple,brown,red) You should know how to work with gradient colors.
All graphic files (jpg) referenced in CSS.
End result will be 4 new templates.
I should be able to test 4 template by clicking 4 test urls on your test server.