irfan-
this post right above yours tells you how to remove the colored bar; while it's green in that example, that's because he's using the green theme.
on the photoshop, have you tried to download another copy of the header? the other, easy solutions is simply to use one of the included finished logos for the size, make the background transparent (so it will blend into the subtle gradient at the top, and make your own logo without the psd file. you don't really need it to make your own logo area-only if you want to modify the one that's there.
hope that helps.