colored boxes are buffalo - type /buffalo config to get the menu to pop up. Green is for buffs, red is for debuffs. There are also purple ones for weapon buffs (oils, sharpening stones, etc.). The 3-d character in the center looks like it might be model citizen, but I've never used it. The other thing you have circled is AutoBar. When the circle is green you can drag it, click on it to make it red to lock. Right click on the circle drag anchor to open up the AutoBar Config.
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"You'd be surprised how many people violate this simple principle every day of their lives and try to fit square pegs into round holes, ignoring the clear reality that Things Are As They Are." -Benjamin Hoff, The Tao of Pooh