change background colour cs cart professional 3 latest version

Can any one please help? I am trying to change the background colour of the latest version of cs cart professional that I have just bought. I have looked at the forum and tried everything. I went through the help desk and they sent me this email back

[size=1]In order to change it, please try doing the following.

  1. Create the following path: skins/food/customer/addons/my_changes and a file with the styles.css name and the following content in it:[/size]

    body {

    background-color: green;


    [size=1]2. Save the file.
  2. Create the hooks/index path in the skins/food/customer/addons/my_changes/hooks/index directory and the file with the following content in it:[/size]

[size=1]4. Save the file.

After that please clear the cache:


I have done this and nothing will work. I have gone into the syle css file and changed the colour code but the change in the code will not save why would that be?

I am new to this and any help would be greatly appreciated thanks