NOTE: These numbers are NOT for AHSAA umpires!! Number is 4" three color. Cost above is per number. Select color code and number. Color Code below. UN-For Navy Shirts. Scarlet on Navy on White Outline. US-For Scarlet Shirts. Navy on Scarlet on White Outline. UP-For Powder Blue Shirts. Navy on White on Scarlet Outline. UB-For Black Shirts & MLB Powder Blue Shirts. White on Black on White Outline. UC-For Cream Shirts & MLB Powder Blue Shirts. Black on White on Black Outline.