The D-backs didn't like the decor in their bullpen, so they made some changes

After three days of staring at Brewers decor in the Miller Park bullpen, the visiting D-backs relievers decided they had enough.
In the first inning of Sunday afternoon's series finale, the D-backs reappropriated a Brewers umbrella in their bullpen as a symbol of their own. The DIY project covered up the home team's logo and added an "A" to support the visitors.

Whether the redecoration of the visitor's bullpen will have any impact in cutting into the Brewers' home-field advantage remains to be seen until if and when the D-backs have to go to the bullpen in the later innings.