A couple of simple questions about changing colors........

Hello,
     Is there any one that can tell me where I have to go to edit the color...

1)for the admin/ log out link next to the admin picture?

2)I would also like to know if the title boxes are Image back grounds or are they just color,and if they are color where do you change the colors at?

3)Last but not least,Where do I change the color for the top menue bar?

Any help would be much apperciated,Thanks in advance...Disstudem