Hi Garth,
I read your reply to Richard. You did a very good job going into all those tests w/ images. Great info.
So I picked a Brown Earth and tested my whites' tinting. Flake White tints the warmer, indeed. But still I could come to no conclusion about the WN Warning label in the 2nd Tube of Tit White. It does seem to tint slightly warmer, but nothing of significance. Maybe only a difference in the vehicles, or, like you said, one tube to another. Where is the lead? You said they perhaps are milled in the same machinery as Cremnitz and Flake White, that's a possibility.
The pics bellow show my experiment. I used a Brazilian Brown Earth (which they named Sombra Queimada, translated "Burnt Umber" but we can see clearly that it has nothing to do with the Umbers we know). It almost matches the color of my wooden palette (made from Ip
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