The Unstoppable Grease Pencil Developer Antonio Vazquez has just committed a patch to the Blender 3.2 alpha which gives the Grease Pencil fill tool an option to contract filled area.
Just committed a new #b3d #greasepencil Fill tool option to contract filled area. This creates a gap between fill and stroke and is useful for some styles. https://t.co/JR6nZcuK4k pic.twitter.com/sHYPMCHOIC
— antonioya ? (@antonioya_blend) February 14, 2022
This is one of those deceptively simple yet very useful additions to the grease pencil toolset, shaving solid minutes of tedious workarounds for any artists willing to achieve this specific effect. In practice, this patch allows the "dilate" value of the fill tool to go below 0 into the negative values, which in turn indicates by how many pixels the fill area is to be contracted.
Download the latest Blender 3.2 daily build on the link below to try out the new feature: