The flag was originally designed by Andrew Carlisle Johnson in 1911. The C-shaped emblem contains the colors of Spain which originally claimed the area, and the gold ball represents the state's mineral wealth. Precise colors of red and blue were not designated in the 1911 legislation and some controversy arose over those colors. In 1929, the General Assembly stipulated the precise colors of red and blue to be the same as the U.S. national flag. Controversy also arose over the size of the letter C, and in 1964, the General Assembly modified the 1911 legislation by revising the distance from the staff for the letter C and its diameter. The flag consists of three alternate stripes of equal width and at right angles to the staff, the two outer stripes to be blue of the same color as in the blue field of the national flag and the middle stripe to be white, the proportion of the flag being a width of two-thirds of its length. At a distance from the staff end of the flag of one fifth of the total length of the flag there is a circular red C, of the same color as the red in the national flag of the United States . The diameter of the letter is two-thirds of the width of the flag. The inner line of the opening of the letter C is three-fourths of the width of its body or bar, and the outer line of the opening is double the length of the inner line thereof. Completely filling the open space inside the letter C is a golden disk, attached to the flag is a cord of gold and silver, intertwined, with tassels, one of gold and one of silver.
Sources: www.worldatlas.com; www.cia.gov