Moyer_powder_blueThe same ones we saw Jamie Moyer wear last year

On Sunday, the Phillies will play the Braves in the Civil Rights Game. In the past, teams had worn Negro League jerseys for the event, but this year will be a bit different. The Phillies and Braves will be wearing throwbacks from 1974, the year Hank Aaron broke Babe Ruth’s home run record: [Braves.com]

When the Braves and Phillies play in the Civil Rights Game on Sunday afternoon at 1:35 p.m. ET, the teams will be wearing throwback uniforms from 1974, when Aaron broke Babe Ruth's career home run record by hitting his 715th on April 8. Of course, the Civil Rights Game stands as just one of the many events being staged in Atlanta this weekend. 

 

That means, for the second year in a row, we will see the powder blues.

UPDATE! Thanks to Matt Gelb, we find out the Phillies will also be wearing Negro Leagues jerseys on Saturday. via the Braves' release:

TRIBUTE TO THE NEGRO LEAGUES - The game between the Atlanta Braves and NL East rival, Philadelphia Phillies will be a tribute to the Negro Leagues. The Braves will be wearing the Atlanta Black Cracker (!!!) uniforms and the Phillies will be in the Philadelphia Stars uniform. A pre-game tribute will include an on-field presentation featuring Negro Leagues players including James "Red" Moore.

 

Perhaps these or these?

You can get some of the throwback gear here.