# How can I change colors of grease pencil strokes drawn in 'vertex color' paint mode?

If I have drawn grease pencil line strokes in 'material' paint mode, I can easily change colors of them by using base color button(marked with a white arrow in above picture).

But after I had drawn some line strokes in 'vertex color' paint mode by a way of trial, I realized that I don't know how to change colors of them.

Help me.

Change from Draw mode to Vertex Paint mode (top-left of the screen) and you'll be able to change the strokes colour.