IS there anyone at the customer’s service to reply to questions, or shall i find a different theme?
If you want the footer widget to look symmetrical, we suggest you to use all 4 footer widgets.
On de naani theme, background color change will apply to the whole screen however you can change footer text color.
Just for your additional info, you may want to try using our “GMO Widget Custom” plugin for more flexibility.
Lastly, to change “Proudly powered by WordPress”, you have to edit “footer.php” file, and information can be found on the wordpress.org forums.