Customizing Outer Wrapper Colour...

This is extension to the previous post on "How add background to blog body".

Firstly I made a small modification in #outer-wrapper { ... }

I replaced

margin:0 auto;

with

margin-top:10px;
margin-bottom: 10px;
margin-right: auto;
margin-left: auto;

and then added the following code

background: #4386ce url(https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjsmk5YOATHtbyU2nAUYlfif8hxBwh-xCrv0uW4eijxofjxwIIuBAfR5Bh3_wJP9MZGG_ILahYP2ogYDCMfiVEusFITNgZ6ScVejfsxdRMF7LxVosEPSEHPYkgaBexa5jGpMBtYCacKXz4/s1600/bg_outer.gif) repeat-x left top;

Further you can change the border color to outer-wrapper background color to match your design.

Just save the template and enjoy the new look...