animation - Grease Pencil why are black strokes gray, and how to

I'm trying to make black strokes in blender, but they are not black. The material is black, the strength is at max, the opacity is 1, but the stroke is still not black.

My 3D grease pencil painting process in Blender - 3D Blendered

Sketch with grease pencil - Ask - GameDev.tv

Aligorith's Lair: Dev Ramblings - Grease Pencil OpenGL Render Exports

Trace to Grease Pencil in Blender kind of

Grease Pencil Material: Texture Spacing, Angle, & Scatter in Dots/Boxes Mode ⁠— Right-Click Select

How assign different material to strokes in grease pencil mode - Blender Stack Exchange

Which add-ons to start with Grease Pencil? - La Cuisine

Fix Grease pencil depth issue in render & lineart draw over other grease pencil objects

Help With Grease Pencil : r/blenderhelp

Grease pencil drawing underneath rough sketch? - Blender Stack Exchange

BSLIVE First Look into Grease Pencil 3 in Blender 4.1 Alpha

Help With Grease Pencil : r/blenderhelp

Edit Grease Pencil Strength - Blender Stack Exchange