The peace charm, wherein the color changes, can be in any color. The garter, where the charm hangs on, is in assorted colors; they are: pink, yellow-green, sky blue, and purple. :)
Violet Blue - Happy, In Love Blue - Calm, Relaxed Green - Average, Not Much Going On With You/ Happy Yellow/Amber - Tense, Excited Brown/Gray - Nervous, Anxious Black - Cold Temperature, Tired Or...
I'm going on memory here, so I might be wrong, but the colors I recall from mood rings and necklaces were green, indigo, blue, orange, yellow, pink and purple.
The colors of a mood ring go as follows: black- serious, intense brown- nervous, troubled red- adventurous, spirited orange- worried, impatient amber- mixed mood, concerned yellow- distracted,...