header and text colors

Can you tell me where I can change:

1)the heading color for the h1 and h2 headers. The header is a turquoise color, but that is not the color specified in Hot Cosmetic Options -> Body.

2) the body text color for posts and pages. I have it set to #000000 om hot cosmetics options -> body text, but it doesn’t seem to be having any affect.

3) where is the code for “Comments: 0” that prints on the posts. I want to comment this out of whatever .php file it is in.

4) in view page source, i can see: .header_wrap {background:#074c59 url xxxx.png. I photoshoped the header_bg2.png and topmenu_bg3.png to be the color I want. But it doesn’t cover the whole screen (I can still see the old color at the edges). is there another place in the code, where the color #074c59 is hardcoded.

5) after i ftp the header_bg.png file to the server, it took over 30 min for it to show up. Is there a way to clear the cache with wordpress? or is it my browser that was holding on to the old .png. (i was reloading the Home page).