PE,
Speaking of Halation, is not the pupose of the yellow dye in Jim Browning's matrix emulsion anti-Halation? And that just brought to my mind-A yellow dye Could be a blue accelorater, could it not? But it might supress the green and Red senisizers.
The legendary "panchromatic sensitizing dyes". Do you know enough about them to have one synthesized?
Bill