Educate me on LUME

I can't seem to find this online so I am asking you guys for enlightenment.

How does different lume age? There is C1, C3, BGW9 etc. but how do these new formulas age? How long will it take the ugly swamp grean to become a creamy yellow?

I suppose the new formulas don't age as much as tritium, but it would be nice to get a general idea of what to expect.

So, let me and the others know!