Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: I'm wearing yellow today to bring a little sunshine to this gloomy day #yourewelcome
This tweet contains emotions: 
joy, optimism, sadness