Ceiling White Paint REALLY Works!

slantsixdan said

Not close to white enough, no. Regular whites like this look grey next to high-reflectivity white.

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I have a number of headlight mounting buckets that I'm about to de-rust & re-finish. I noticed a long time ago that some sealed beam lamps had the silvering selectively missing, ........the '92 Chebby G10/Sportvan I just picked up has them painted black, some are galvavized, some appear to be painted gray/body color overspray. Is the desired bucket finish affected by the type of sealed beam, i.e. low/high-low/high, or does it not matter?
I know I cleaned up some buckets on a rectangular 4-lamp system, & the bottom of the one pair only had a strip of silvering up the middle, the lamps were brighter new of course.......but seemed better than before w/new lamps. Is the missing silvering intentional to reduce up-scatter light, or just cheapin' out, (I believe they were Wagner Halogens~'90)?