OK, im in the middle of redesigning my phpBB3 forum and I cant seem to find the code for the heading (with the logo and site name and that garbage). I just need to change the color of it. Can anyone help guide me to the code for it, like under what category in the coding and stuff of the theme editor.

I would assume that can be modified by the Cascading Style Sheet.

im editing using the theme editor in the ACP. I just need to find the code for the header

Can you please just send me the link for this forum, and i will tell you exactly where is the code in your CSS.. just send me the link here..

The HTML for the header is in:
/path/to/phpbb3/styles/[theme in use]/overall_header.html

After you find the element/style you need to modify, edit the CSS file somewhere within:
/path/to/phpbb3/styles/[theme in use]/theme/

I would recommend learning CSS before trying to styling anything. It heaps a load to know what the difference is between different sections. Check the documentation as well, they usually have interesting stuffs in there.

Jacob.