Please read the Scribal Handbook. It contains a lot of useful information, including guidelines for completing pre-printed award scrolls: https://www.sca.org.au/scribe/handbook/Lochac%20College%20of%20Scribes%20Handbook%202012.pdf
Winsor and Newton have some useful information on their site.
Understanding the Meaning of ‘Body Colour’ in gouache https://www.winsornewton.com/au/discover/tips-and-techniques/gouache/the-term-body-colour-in-gouache
Why does Winsor & Newton refer to colour bias rather than Munsell Ratings? https://www.winsornewton.com/au/discover/tips-and-techniques/other-tips-and-techniques/colour-bias-rather-than-munsell-ratings
Understanding the Permanence of W& N colours: https://www.winsornewton.com/au/discover/tips-and-techniques/gouache/permanence-of-gouache-colours
Understanding the lightfast, permanence and archival quality of inks: https://www.winsornewton.com/au/discover/tips-and-techniques/inks/understanding-the-quality-of-inks
This page is neither an official publication of the SCA Ltd (Australia) or the SCA nor is its content meant to convey official SCA policy