Quoted from flynnibus:
So these PFs have never been exposed to light and heat.. they should be similar to what we see under flippers/plastics in 'in the wild' playfields to a large degree.
The claim that "the white of the pool balls and banner flags is slightly brighter than under the plastics - proving there are two different colors" may appear that way on some EBD's and trick your eye into thinking they started that way.
But they started the same white.
The later differences have to do with exposure differences. Under plastics, the white "bakes" from the light/heat of the bulbs. Out on the playfield surface, the white doesn't. GI bulbs can not only deepen the ink/lacquer under plastics, but sometimes (and we have all seen this on some games) around the bulb holes the white bakes to a extreme orange/brown "cooked ring". Don't forget that tungsten filaments (yes - little 44 and 47 bulbs) DO produce UV. Even your average 500 watt work-lights sold at Home Depot and Wal-Mart come with UV-glass faces, and warning stickers nowadays.
All those white GI areas CAN and WILL yellow MORE than white out on the general playfield. The laquer and ink reacts worse to heat/light from the bulbs (accelerated), than just "general light" through the playfield glass.
Quoted from flynnibus:
Where I think you had failed to convey to people is clarifying the # of colors that were laid down
9 colors on EBD. No more, no less.
I banged on this fact ad nauseum. Maybe you didn't see those posts way up above:
Post #84 "Remember - the IPB (original film) 9-color print confirms there is *no additional spot color for a creme*... So either it's ALL white, or it's ALL cream. Pool balls = slingshot areas."
Post #81 "We can see the 9 color pallate on IPB's repro's (on the apron). There is only one color for whatever is under the plastics (GI areas) and the white areas of the pool balls, etc."
Post #62 "You can see Gene's print from original films - and the 9 color palatte on the apron. It was Gene's screener that screened the white layer as a creme (as I was told by Gene AND Kim) "
Post #51 (photo showing IPB repro from original Bally films, with 9-color palatte shown on apron)
Post #42 (Gatecrasher's even better IPB repro photo, with 9-color palatte shown on apron)