From red to silver: the colour-coded notices police forces use across 196 member countries

Background

The full name of INTERPOL is the International Criminal Police Organization, an inter-governmental organization with 196 member countries.
Its General Secretariat is run by the Secretary General and comprises a headquarters in Lyon, a global complex for innovation in Singapore and several satellite offices, while the General Assembly is the governing body and brings all countries together once a year.
In each country a National Central Bureau is the central point of contact for the General Secretariat and other bureaux, and member countries are linked by a secure communications system called I-24/7.
Notices are issued by the General Secretariat at the request of a member country's National Central Bureau, and can also be issued at the request of international criminal tribunals, the International Criminal Court, or the United Nations in relation to Security Council sanctions.
A Red Notice seeks the location and arrest of persons wanted for prosecution or to serve a sentence; a Yellow Notice helps locate missing persons, often minors, or identify persons unable to identify themselves; a Blue Notice collects additional information about a person's identity, location or activities in relation to a criminal investigation.
A Black Notice seeks information on unidentified bodies; a Green Notice gives warning about a person's criminal activities where the person is considered a possible threat to public safety; an Orange Notice warns of an event, a person, an object or a process representing a serious and imminent threat to public safety; and a Purple Notice seeks or provides information on modus operandi, objects, devices and concealment methods used by criminals.
A Silver Notice, in a pilot phase, is used to identify and trace criminal assets, and an INTERPOL-United Nations Security Council Special Notice is issued for entities and individuals who are the targets of United Nations Security Council Sanctions Committees.
A Notice is published only if it complies with the Organization's Constitution and the Rules on the Processing of Data, and it will not be published if it violates Article 3 of that Constitution, which forbids the Organization from undertaking any intervention or activities of a political, military, religious or racial character; requests are reviewed for compliance by the Notices and Diffusions Task Force.