I'm pretty sure they are new light poles as well as lights in the outfield. The old ones were black (or rusted) I think and the new ones look to be galvanized. Only reason I'm pretty sure is because I drove by around dusk a week ago and the light poles caught my eye instantly
1st new light pole....SUCCESS! pic.twitter.com/vgqvojVU05
— Cajuns Baseball (@CajunsBaseball) January 11, 2016
EDIT: Found one on IG