Righteous fire is too bright

Hi everyone!

I had vision correction half year ago, so my eyes truly hurt when I watch too long for bright things. They are freakingly bright for me.
But I truly love Righteous Fire skill. Unfortunately, none of represented microtransactions could improve things, but they make them worse.
I even use eye care mode in Windows, that has somewhat effect, but still too low, to make RF comfortable.

Do you know any ways to reduce brightness of RF?
Because 2 hours of RF play is limit for my eyes, and I woud preferably play up to 6 hours, like I could with other skills, like Cyclone.

If there any possibility, that there is planned any low-brightness microtransaction for RF, I would gladly buy it.

Best regards!