It's been a while since there were some new colour in the Pigments collection... but but I've just added some new ones, and a couple of them are a bit more unusual so I thought a bit of an explanation about the colour might be fun.
This one is Cobalt Titanate, it mostly seems to pop up as a watercolour paint in various colours that are all in the Teal-Turquoise sort of area. The exact colour varies depending on the manufacturer, but if you watch this video you can maybe see why I chose to go with the grey hints in this one.
Manganese Violet was one of the colours that Monet used instead of black. He used it to create shadows in the extensive series of paintings he did of Rouen cathedral.
Here's how it's made-
And then after a couple of inorganic compounds we have Woad... which I don't know how it's taken me so long to add this to the palette!
This was the source of blue in Europe before Indigo. It's actually the same chemical compound within the leaves as it is in Indigo, but Woad plants produce much less of it. It was also supposedly the colour that the Picts covered themselves with before battling the Romans.
Julius Caesar write in Commentarii de Bello Gallico that the Britanni used to colour their bodies blue with vitrum, a word that means primarily 'glass', but was also used for woad. But modern translations and historians are questioning this, and that maybe the translation has been adapted to fit the idea....
It's unlikely it would have been used as a pigment for tattoos. People have tried it in modern times (of course they have!), and apparently it doesn't produce a good tattoo, is caustic, and tends to produce scarring. There were better tattoo pigments available. It also doesn't produce blue when used as body paint mixed with a binder. It's more likely they used iron or copper earth pigments.
All the Pigments are here-