Color is widely taught down to K-2, but content and outcomes are poor. So I was exploring how one might better teach color, with an emphasis on spectra. Using multispectral/hyperspectral images of everyday life, objects, and art, seemed an obvious opportunity. Mousing over images like[1] for example, showing spectra vaguely like[2]. But I found very few (non-terrain) images that were explicitly open-licensed for reuse. It seemed the usual issue - there's so much nice stuff out there, living only on people's disks, for perceived lack of interest in it. So FWIW, I note I would have been delighted to find someone had made such images available. Happy to chat about the area.

[1] http://www.ok.sc.e.titech.ac.jp/res/MSI/MSIdata31.html [2] https://imgur.com/a/teaching-color-using-spectra-zOtxQwe