diff --git a/manimlib/animation/indication.py b/manimlib/animation/indication.py
index 268ad5f4..62026e63 100644
--- a/manimlib/animation/indication.py
+++ b/manimlib/animation/indication.py
@@ -94,8 +94,10 @@ class Flash(AnimationGroup):
             line.shift((self.flash_radius - self.line_length) * RIGHT)
             line.rotate(angle, about_point=ORIGIN)
             lines.add(line)
-        lines.set_color(self.color)
-        lines.set_stroke(width=3)
+        lines.set_stroke(
+            color=self.color,
+            width=self.line_stroke_width
+        )
         lines.add_updater(lambda l: l.move_to(self.point))
         return lines