To change the background color of the shipping and handling section you should just be able to switch out the hex color in quotes here: bgcolor="#91181d" to the color of your choice. Check out some HTML hex color options here if you aren't familiar with this notation:
http://html-color-codes.com/
About your description and images. I don't see anywhere in your template you are using the [DESCRIPTION_AND_IMAGES] tag? If you put this somewhere (probably directly under the Description header image) then you should be able to choose your image alignment and grouping as normal from the lister page.
Let me know if this helps
Auctiva David