What do the red white colors on republic Georgia flag means?

The flag fell out of use later in the medieval period, but was revived by Georgian patriotic movement following the country's independence from the Soviet Union in 1991. A majority of Georgians, including the influential Catholicos-Patriarch of the Georgian Orthodox and Apostolic Church, supported the restoration of the flag and in 1999 the Georgian parliament passed a bill to change the flag. However, it was not endorsed by the President, Eduard Shevardnadze. It was adopted in the late 1990s by the main opposition party, the United National Movement led by Mikhail Saakashvili, as a symbol of popular resistance to Shevardnadze's rule. The flag was adopted by the Georgian parliament on January 14, 2004. It was formally endorsed by a presidential decree signed by Saakashvili on January 25, following his election as President of Georgia. Its adoption was not without controversy, as some complained that the adoption of a party's political flag as a national emblem was an undemocratic move.