The Angels acquired Randal Grichuk and CJ Cron from the Rockies in return for two minor league pitchers:

The Los Angeles Angels bolstered their lineup in a trade with the Colorado Rockies on Sunday, acquiring infielder C.J. Cron and outfielder Randal Grichuk along with cash considerations for minor league LHP Mason Albright and RHP Jake Madden.

ESPN.com

The injury to Taylor Ward required the Angels to add depth. That said, neither Cron nor Grichuk hit well away from Coors Field in their time with the Rockies. This is more about the ability to put a team on the field than improving the offense. The pitchers sent to the Rockies are long and have not pitched much in the minor leagues. They strikeout batters, with also get hit enough to own high ERAs. Neither was a terribly high draft pick.