Need to modify the slider

I need your help

I need to modify the background (GREEN COLOR) if the slider.

What is the files to modify?
I aprecciate your help.
Can you help me?

I have a license for this theme :)

Hi can you help me?
This theme is Nature 2.0

Hi!
Hi!
To fix this you have to change the code:

body {	
	color:#181818;
	font-size:13px;
	font-family: 'Arial', sans-serif;
	position:relative;
	background:url("images/back-body.png") repeat-x scroll 0 147px;
}

in the file style.css.

Thank you for your response, i have antoher question, I have a issue in this webpage: http://www.futurototal.com/susalia/susaliaeng/ In chrome the main menu displayed incorrectly and in Internet Explorer display very well. What is the problem?

I apprecciate your help.

Hi!
I can't find the difference. Could you clarify your problem?