A system of inkjet inks suitable for additive manufacturing by inkjet printing includes a build ink and a support ink, the build ink and support ink have a differential color scheme and at least one of the build ink or the support ink includes a colorant. A method of additive manufacturing includes providing such a system of inkjet inks and printing via a multi-jet inkjet printing system an article with the build ink and the support ink, the article including a build material portion and a support material portion. A cartridge or kit for additive manufacturing by inkjet printing includes such a system of inkjet inks.