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Palpatine would acquire for himself the Orange ring.
Order 66 would be about betraying the Green Lanterns as well. The clones would all be imbued with the red ring. Hate driven monsters designed to destroy the Green Lanterns.
When Luke is set onto his quest, it is about finding the Blue Ring of Hope. Green Lanterns have joined the Rebel Alliance. Green Squadron. Oa has been destroyed by the Death Star, their rings are depleted. It isn;t until the find the Blue ring that they are able to do more.
In Return of the Jedi, there is a scene where the an Ewok is killed and another Ewok screams in rage. The Red Ring gets passed to him. But the Orange Ring is lost, thought destroyed.
As we continue into the Extended Universe, the Purple and Indigo rings are discovered. Offshoots of Force wielders, they are not Jedi, but something different.
The new trilogy sees Kylo Ren with the Orange Ring, until Palpatine returns, stored within the ring itself, he has been waiting for someone to put on the ring ,so that he can take him over.