Microsoft’s Acrylic is tolerably documented too (the concepts, not the exact values): https://learn.microsoft.com/en-us/windows/apps/design/style/acrylic https:

Microsoft’s Acrylic is tolerably documented too (the concepts, not the exact values): https://learn.microsoft.com/en-us/windows/apps/design/style/acrylic https://learn.microsoft.com/en-us/windows/apps/design/style/.... At the end, especially: “The acrylic recipe: background, blur, exclusion blend, color/tint overlay, noise.”