What does the indicator light color mean on the charging case?

An orange light indicates the battery level is below 90%, while a white light indicates the battery level is at or above 90%. The indicator displays the battery level of the G1 when it is in the case, and switches to showing the case's own battery level when the G1 is removed. A flashing orange light means the G1 is not correctly positioned or folded. (Page 2)