Ok, to get the PSone screen brighter, hailrazer posted on BenHeck a while back how to remove the anti-glare layer from the screen, so I just did it - posting my pics:
Screen as it was, a bit mucky (this was a spare screen BTW).
Remove the metal shielding from the screen sides.
Placed it onto a CD case so the ribbon cable doesn't get damaged.
Layered 6 sheets of two-ply toilet paper on top.
Wet the paper under a slow-running tap, put a piece of card on top to ensure tissue paper keeps contact with the screen well.
Put a couple of weights on top - had some old VHS tapes, fine - could have used a book, whatever.
Applied more water after a couple of hours to stop the tissue from drying at all.
After 4.5 hours, removed the weights and card.
Lifted off the toilet paper.
Then gently lift off a corner of the plastic anti-glare sheet. If there is any resistance, then stop as you are lifting the polarize layer which will destroy your screen. The anti-glare layer is a thin and flexible piece of plastic sheeting, on top of the polarizer layer. I had to try all four corners before I could easily lift off the anti-glare layer. Once you have a corner, use some pliers and carefully, and evenly, lift off the whole sheet.
And this is what you get, after giving the surface a through dry with a spectacles cloth (or cotton cloth) - you don't want any moisture. Once finished, place the screen onto the white light block and pop the grounding metal covering back on.
The colours are supposed to be brighter, better colours, less pixilated image; ie better!
In this pic, you see the removed anti-glare sheet.