In lieu of reddening, he oranges 1. “The Tyndall effect in opalescent glass: it appears blue from the side, but orange light shines through.” Wikipedia, “Tyndall Scattering”; https://www.flickr.com/photos/50206319@N00/112909824 2.
A general philosophical instrument of universal application The theory: David Brewster, A Treatise on the Kaleidoscope, Edinburgh, 1819. https://archive.org/details/b29295440/mode/2up The actuality in advance of the theory: