The ice cube on f102v

[JoJo_Jost]

That’s interesting—why did you mention in my comparison (and in this last one) that the blue might have been added later, and showing a blue crystal too?  

If you look at the salt and the cube drawn there, you can see that the salt isn’t blue at the edges either, but only in the middle… and the yellow is at the Sides, just as drawn, but that’s just a side note…