Suggestions on how to stabilize lume and clean watch hands

Hello everyone,
I recently got my grandfather's Seamaster 168.023 officially serviced from Omega.

Unfortunately they replaced the hands of the watch (attached pics). But have agreed to change back to the original as I have them with me.

Before I ask them to replace the hands – i thought it would not be a bad idea to clean them a bit, and possibly stabilize the lume, especially because I suspect the Omega service in India might not do the latter at all while cleaning and replacing the…

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