(X - +)buttons in windows

My close Minimize and expand Buttons in the upper left hand of the screen are all Grey. they used to be red Yellow and Green how can i change them back? i am new to mac and i love it thanks in advance mark

Open System Prefs (found in your utilities folder in the applications folder) and click on the Appearance section. Does the first pop-up menu in the list say Graphite or Blue? If its graphite, switch it back to blue.

thanks

i really appreciate it.... now how do i make it so when i start to type my email login at a website it will finish itself?

Are you using Safari? Open Safari's prefs, and in the Autofil tab, and check off the boxes.