BWG/R states: “The Codex chapter, Gray and White Math, is the definitive source for all things shaded.” (pg. 50).
…It sounds familiar, and there’s information I know, but I can’t find the source for (like mixed root skill shades adding 3 instead of 2 if the roots are black + white). But I can’t actually find this chapter in the Codex. Neither the table of contents, skimming, nor the index of headings in the back. There is a Shades chapter, but it doesn’t contain the math; just more commentary.
Where did this go? Or am I crazy and overlooking it?