I just added new features to MoodJam to improve how users record moods.
Valence - Users can now rate their moods from negative to positive (-100 to +100) using a slider.
Prettier Color Selection - The color selection user interface now has a square preview pane, which matches the square tiles seen throughout the site. The preview pane has a striped background if the user has not selected a color.
Private - Users can set their moods to private by clicking the check box "Keep to myself". Private moods are only visible to the owner.
Here is what the new user interface looks like: