How To: Add Background Color and Image To Sidebar Titles and Widget Titles.

Colours To Widget or Gadget Titles
1.Login to blogger
2.Template >> Edit Html
3.Search for ]]></b:skin> using Ctrl+f
shortcut key.
4.Add below code before ]]></b:skin>
.sidebar h2, .rsidebar h2, .lsidebar h2 {
background:#000000;
color: #FFFFFF;
font-family: verdana,arial;
font-size: 12px;
font-weight: bold;
height: 33px;
margin: 0;
padding: 3px 0 3px 7px;
text-transform: uppercase;}
5.You can change colors as you like.

Add Image To Widget or Gadget Titles
1.Login to blogger
2.Template >> Edit Html
3.Search for ]]></b:skin> using Ctrl+f
shortcut key.
4.Add below code before ]]></b:skin>
.sidebar h2, .rsidebar h2, .lsidebar h2 {
background: url
(" http://3.bp.blogspot.com/-ukilx6rkbrg/
T9LWeeIZrjI/AAAAAAAAAI0/NBt7PYJH7lk/
s150/sas.png ") no-repeat scroll 0 0
transparent;
color: #FFFFFF;
font-family: verdana,arial;
font-size: 12px;
font-weight: bold;
height: 33px;
margin: 0;
padding: 3px 0 3px 7px;
text-transform: uppercase;
5.Save template and check your template.

Also See:
1.More Blogger Tips
2.Create Logo For Your Business
3.Free eBooks In PDF