Make "Fill" tool in GP draw mode switch to a proper fill material automatically

Let's say we have 2 materials in an object:

• Foo Stroke
• Foo Fill

When I switch to the "Fill" tool ( bpy.ops.wm.tool_set_by_id(name="builtin_brush.Fill") ) blender should switch active material to Foo Fill . (If it exists)

And vice versa, if I switch to the "Draw" tool ( bpy.ops.wm.tool_set_by_id(name="builtin_brush.Draw") ) blender should switch active material to Foo Stroke . (If it exists)

I think this would not only speed up the process but help establish the naming convention for GP materials. Maybe it could use the same suffix/prefix detection system from Symmetrize operator for bones, but instead detect if materials have *Fill , *Stroke , *_Fill , *_Stroke , *_f , *_s in them?