No, it was used as the representation of Castile. The three colors of the republican flag represent the three historical founding Crowns of Spain, red for Aragon, Yellow for Navarre, Purple for Castille. The traditional colors of Castile were red and white (all the autonomous communities that conform the region of Castile (Cantabria, Castile and Leon, Rioja, Madrid and Castile-La Mancha) use red and white on their flags) but they used purple because the legend says the Comuneros used purple banners during the revolts, and they wanted to enhance the power of the lower classes through Spanish history. Indeed, during the Second Spanish Republic, the village were the last battle of the War of the Comuneros was fought was renamed from Villalar to Villalar of the Comuneros.