I use a white hatch (255,255,255) on a 74% transparent layer in model space to fade background objects in detail windows. For years this has printed like this (below) from pre-8 Rhino versions using the Rhino pdf driver. This is also what I also get when I print from my current Rhino 8 project after I’ve saved it as a Rhino 7 file:
You can see above that the background of the detail window is pure white, which is as desired. But Rhino 8 - with the same render settings and again using the Rhino pdf driver - prints the transparent pure white hatch as a tone of grey (below) rectangle making the boundary of the detail window undesirably stand out and reducing the impact of the linework overall. I can’t make the object any whiter, and the Render settings are the same, so I don’t see any way to remedy the situation.
