Add background image to search module

I have tried to change the background image of the search module to a full color image and for the life of me I can not get it to work it will show and then when i click in the space it turns back to the old all white module...please advise how to make this happen

Thanks

joomla 2.5
black & white template

URL is online i can email link if needed

Please post/sent the website link in here or to my email normanuk [at] live.co.uk. See you around...