(a) The pitcher’s glove may not, exclusive of piping, be white, gray, nor, in the judgment of an umpire, distracting in any manner.
(b) No pitcher shall attach to his glove any foreign material of a color different from the glove.
(c) The umpire-in-chief shall cause a glove that violates Rules 1.15(a) or 1.15(b) to be removed from the game, either on his own initiative, at the recommendation of another umpire or upon complaint of the opposing manager that the umpire-in-chief agrees has merit.
Umpire makes pitchers change gloves Rule 1.15(a)
PBUC: If the glove laces are distracting, the umpire may require the pitcher to cut the laces or change gloves.