=D> Well done, George! A positive contribution to the science of astronomy. Give that man an award!
So, if the sunlight is reduced to about 0.1% of its normal intensity, it looks white - is that your finding?
I don't suppose you could reduce it to, say, 0.01%, or even 0.001%? Baader AstroSolar Safety Film reduces the intensity of sunlight by 99.999%. But it does not reduce it equally across the spectrum - blue wavelengths are attenuated much more than red - so it's not much use to us here.