The official banner of the state of Kansas, provided for in Kan. Stat. Ann. § 73-703, shall be of solid blue and shall be of the same tint as the color of the field of the United States flag, whose width shall be three-fourths of its length, with a sunflower in the center having a diameter of two-thirds of the space of the banner, enclosing and surrounding with its petals of gold, a brown center having a diameter of two-fifths the size of the sunflower. Service banners may be made of bunting or other material of such size as required on conforming to the proportionate specifications.