Hi Robert, probably other ways to get there, this is one: palettes >> quick insert CSS, raises the Quick Insert CSS window click the colour wheel to raise the Insert Colour windowclick on either of the rectangular colour swatches to the right of the colour/background colour radio button options, to raise the (system level) colour window
the new Mondrianum icon will appear in the top row here is a screen shot (which may not get through the mail/list process)