Temperature means how "warm" or "cool" your skin, eyes, and hair are. Warm tones are more yellow-based; cool tones are blue-based. A quick way to figure out which world you fall into, Gustafson says, is to stand in front of a mirror in daylight and hold up some produce next to your skin (yes, you read this correctly). If you look better next to a raspberry (contains more blue), you're cool. If, on the other hand, you look peachy next to a tomato (more yellow), you're warm.

Depth refers to lightness and darkness of your coloration. Light hair and skin would pair well with powder blue, while dark features match navy blue. Royal blue would work for somewhere in between.

Intensity is how bright or muted the colors are. Men with muted or softer coloring look better in "dusty or hazy" colors that have a touch of gray or are faded. (President Bill Clinton is an example of muted coloring.) Men with darker complexions and hair look better in bright colors-crisp, clear, rich colors that pop out. (Here's something that you've probably never read before: Sylvester Stallone is bright.) Gustafson offers this white-shirt tip: "Cool" men should wear white shirts. "Warm" men should stick to the ivory or cream variations of white.