Cannot draw strokes well

[pujiaxun]

The extension seems to draw both the stroke and fill, while chromium only paints the stroke.
In addition, the extension does not draw the correct radius of the stroke.

the viewer:

the actual rendering of chromium:

[pujiaxun]

I think the problem might be here:

chromium will only render one of the stroke or fill. if set STROKE, then it will ignore the fill color.

but the viewer extension set both the stroke and fill colors like this: