1.1 Create 1 white dot with photoshop. (high quality png is most of the time better)
https://wiki.multitheftauto.com/wiki/DxDrawImage
1.2 or https://wiki.multitheftauto.com/wiki/DxDrawText and use the • character.
2 Change the color of the image(white) or text
tocolor(255,255,255,255) -- white
tocolor(200,200,200,255) -- light gray
tocolor(155,155,155,255) -- gray
tocolor(55,55,55,255) -- dark gray
tocolor(0,0,0,255) -- black
3 Use tickCount() to manage the progress.