Colorado Notice of Change of Address or Entry of Appearance is a legal document used to inform the court of a change in address or appearance of a party or attorney in a legal action. It is usually filed in the local county court where the legal action is taking place. The notice must be filed before any action is taken on the case, and it must be signed by the affected party or attorney. Types of Colorado Notice of Change of Address or Entry of Appearance include: 1. Notice of Change of Address: This form is used to inform the court of a change of address for a party or an attorney who is involved in a legal action. 2. Notice of Entry of Appearance: This form is used to inform the court when an attorney has entered an appearance on behalf of a party or witness in a legal action.