Memory Orbs

Memory Orbs are important objects from the Pixar film Inside Out, containing the memories of the person they were created in. The Orbs differentiate in color, each one representing a specific emotion- gold for Joy, blue for Sadness, green for Disgust, purple for Fear, and red for Anger. They are activated by the Emotions in Headquarters of a person to make that person remember things.

Trivia

 * During the events of Inside Out, if Sadness touches a Memory Orb the memory will become sad and the orb's color will change to blue. This is probably because the memories are all from Minnesota and Riley is not going back, which makes her memories of Minnesota sad. If this is true, presumably nothing would happen to San Fransisco memories.
 * At the end of the movie, it is shown that one memory orb can be made by two different emotions at the same time, such as when Riley is hugging her parents, and Joy alongside with Sadness create a new core memory with both of their touches.
 * If a memory is faded and unclear, the quality of the "video" inside the orb will be blurry and the audio playback from the orb will be muffled and quiet. This is mostly seen in older memories from when Riley was much younger. The orb will also turn into an aged, sepia color.
 * The orbs are all color coordinated based on their respective emotion. However some of the orbs lack color altogether. Some of the memory orbs in Long Term Memory are gray in color, which store general information such as phone numbers and the names of US Presidents that can't be classified by emotion. Orbs that are in the Memory Dump are also a faded sepia color, representing how they are faded and will be forgotten.