Do you think you would have noticed tinted sprites back when you had your PS1? Has it been a long time? If you were less technical at the time and didn't know what a sprite was, then you probably wouldn't have spotted it.
If any current PS1 owners want to investigate, summon Ramuh in FF7 and check out his lightning. If you see a tint surrounding the lightning bolts, that means FF7 works properly on the PS2.
I tried looking at PS1 screenshots of Ramuh on the internet but I did not find any good shots. This one is too small and is against a night sky so it is hard to see if there is a tint or not.
