Recommended room lights and wattage to minimize/slow down amiga yellowing

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Just bought a minty newish white looking amiga 500 and monitor, want to reduce the lighting or find the best one. I'm using the 9 watt and 12 watt LED bulbs in one central light holder at the top center of my ceiling in my games room. What is the best bulb and wattage (1 or 2 together) to minimize/reduce/slow down the yellowing for amiga and 1084 monitor.

I feel if the wattage is too low it becomes too dark and I can't see everything clearly in my room, and then maybe if it too much it could be too bright it could potentially increase the yellowing in a shorter period of time. What is best? Is my setup potentially risky and is the wattage too much? in terms of potentially accelerating the yellowing? The light does hit the amiga and monitor almost directly is been okay for the last weeks but sometimes I get a bit paranoid about it.

[Jumpdash]

Is LED 9 w and 12 w together and the amiga monitor and keyboard being almost directly under the lights ok?  the lights are on the top center ceiling, that does that contribute to heat? or not really? Lamp better,? it seems like a drag to do that...I'm willing to heard the truth just to preserve it...

Mine seems to be an early 1987 model, both the 1084 and the keyboard and was already mostly whitish, not 100 percent but very white/light beigish, and ntsc.. maybe they used better materials? I just want to take as many precautions as possible. Is there anything better I can do, watt or bulb type or position wise (lamp vs what I have set up where lights are stuck to center of the wall, I can't move desk)?