Sunflowers by Vincent Van Gogh
This piece has a very interesting feel to it that makes the sunflowers feel distressed and unhappy. Its hard to give emotion to a object in nature but I imagine the flowers would be feeling sluggish and upset. Yellow is typical associated with happy times, but this shade of yellow is muted without excited. Van Gogh was a very troubled man so it's no surprise that even sunflowers look dull in his eyes.