XF 2.3 How to change background colour of main forum table?

[drwho-online]

Hi Guys - how can we change the background colour to white for the main forum area, so all the gaps in between (and on the right) and filled in?

Have included a screenshot.

Also, is there a way to separately change the colour of the admin bar background?

 

[Mr Lucky]

You'll find Page background in your admin control panel > Appearance > Style properties > Page Setup > Page background . Your site appears to have a background image so you'll need to remove that and then set the colour as the background image would overrride any color

Staff bar is in Style Properties > header and navigation > Staff tools bar