Unknown insect in my Arizona garden bed

Anyone have an idea on what this bug is called? Is this a beneficial insect? It is a mostly green-ish insect and as the saying goes, "if it greens it's good", however I know there are exceptions to the rule so I thought I'd post a image or two and find out if anyone might know something about this insect.

Do you know if this insect is good to have in the garden?

Have been finding a lot of these insects flying around the garden. Do you know if they are eating the "bad" bugs, or eating my plants?