Originally Posted by PSP 2010 Rulebook
9.7.3. The color yellow is prohibited on any player equipment or clothing, except that a
player's jersey, pants, gloves or shoes may have yellow so long as no part of yellow coloring is more than 0.25 cm from some other color, and no more than 10% of any 5cm by 5cm square on clothing or item is yellow.
22.214.171.124. For reference purposes, 'yellow' is any color similar to Pantone colors 101, 102, 107, 108, 109, 116, 3945, 3955, 3965, and 803, although any head judge may prohibit any equipment they believe interferes with the judges' ability to officiate effectively.
So grab some color samples from Home Depot I guess to send along with you gun?