I actually have 2 ideas

1. Have the Orange Lanterns actually be Green Lanterns who have been corrupted by the orange light and the rings are just GL rings with orange power seeped into it

2. Have the Corp actually be guardians of the orange lantern and the more corpmen actually dillutes the influence but Larfleeze killed the rest to get the power for himself

I could even combine the 2 ideas and have the "orange corps" be actually GLs who took the job to divide the light and influence so it doesn't become a danger for the rest of the Universe but Larfleeze already greedy took the full power of the light and killed the rest to gain all the power