Plates in gorgeous colors from Mary Gartside’s 1808 work “The Rainbow for their Guide:  New Theory of Colours.”

Yellow. Page 56. English. Printed in London by J. Barfield. Collections of and digitalized by the Getty Research Institute. In the public domain due to age. via https://archive.org/details/gri_33125015119437/page/n56/mode/1up
Orange. Page 60. English. Printed in London by J. Barfield. Collections of and digitalized by the Getty Research Institute. In the public domain due to age. via https://archive.org/details/gri_33125015119437/page/n60/mode/1up
Scarlet. Page 64. English. Printed in London by J. Barfield. Collections of and digitalized by the Getty Research Institute. In the public domain due to age. via https://archive.org/details/gri_33125015119437/page/n64/mode/1up