Stateful colors are used for convey additional meaning for a given UI component. For example, you may choose to color a warning alert with a yellow tint.
There are 6 stateful colors: normal, hot, informational, danger, warning, and success. You may customize these colors by modifying the Status Colors within Theme Roller.
Note: Color alone should not be used to convey information as it may not always be accessible. You can learn more on the proper use of color on the Accessiblity page.