National colours of Greece of arms of Greece consists of a white cross on a blue escutcheon which is surrounded by two laurel branches. Although the tincture for the branches is designated as "proper", which implies the colour found in nature, it is usually displayed with blue laurel branches; the president, military, and security services use golden branches instead. The Flag of Greece is also blue and white, as defined by Law 851/1978 "Regarding the National Flag". It specifies the colour of "cyan" (Greek: κυανό, "kyano"), meaning "blue", so the shade of blue is ambiguous. The Order of the Redeemer and military decoration Cross
Flag of the Greek Orthodox Church of the Byzantine Empire. The double-headed eagle was historically used as an emblem in the late Byzantine period (14th–15th centuries), but not on flags; rather it was embroidered on imperial clothing and accoutrements by both the Palaiologos emperors of the Byzantine Empire and the Grand Komnenos rulers of the Empire of Trebizond, descendants of the Byzantine imperial family of the same name. The actual flag of the Palaiologan-era Byzantine Empire was based on the tetragrammatic cross in gold on a red background. This design also forms the basis for another flag used by the Orthodox Church of Greece, with the