Why white and blue in the flag??

The flag of Greece (popularly referred to  "blue-white"), officially recognized by Greece as one of its national symbols, is based on nine equal horizontal stripes of blue alternating with white. There is a blue canton in the upper hoist-side corner bearing a white cross; the cross symbolizes eastern orthodox christianity, the established religion of the Greek people of Greece and Cyprus. According to popular tradition, the nine stripes represent the nine syllables of the phrase  ("Freedom or Death"), the five blue stripes for the syllables  and the four white stripes . The nine stripes are also said to represent the letters of the word "freedom" . There is also a different theory, that the nine stripes symbolize the nineMuses, the goddesses of art and civilization (nine has traditionally been one of the numbers of reference for the Greeks