Hn.. got a few Trickster settings for ya. These'll go for most ROM/kernel combos. Had one of the screens with the dingy yellow-whites.
So an aged amoled (a year is good enough to fit in such a catagory tbh) might benefit most from these.
If using a kernel with Trinity colors (since there's no Gamma control) , Contrast Offset should be -24 and Red & Green in Multipliers should be lowered 20 points.
If using mpokang, up Red & Green by 30 points.
Note: If you're using a kernel that has UV controls, and an Auxiliary (I think it was called) section where the MMC and Regulator stuff goes.. there's one control that affects the screen display. It's default voltage is around 3200 I think. Anyways, if lowered to 2850, Gamma/Contrast and such will be heavily affected. These are my Trickster settings after undervolting this... anomaly:
Contrast: Low as possible
All Multiplier values can be lowered or raised relative to each other, depending how much brightness one prefers.
Hope this helps a bit!