The Drew Butera hair flip has become a regular feature at Kauffman Stadium since he joined the Royals in 2015.
The next time Butera takes off his helmet to do the flip, fans will see a little flash of color.
On Friday, Butera made good on a promise to Dagan Lingenfelter, a 7-year-old who was battling cancer.
“He was in the hospital battling cancer and going through chemo,” Butera said in the Twitter video below. “I made a promise to him, he had his hair dyed, that when he beats cancer he could dye my hair.