By day, light comes from every direction. No shadows, and navy looks nothing like black.
At night, your ceiling light comes from one direction: above and behind you. When you lean in, your head and hands block it, and a shadow lands right where you’re threading.
A brighter bulb won’t fix that. The problem isn’t darkness, it’s the angle.
Light from table level, right beside your mat, has nothing in the way. No shadows, colors come back, and you can bead at 9 PM the way you bead at 2 PM.