Unintuitive to draw a border-only ellipse

Minor note on CleanShapes, I have to do this to get a border-only ellipse:
```
    CleanEllipse(focused_node.x, focused_node.y, 120, 80)
        .Blend(c_black, 0)
        .Border(5, focused_color, 1)
        .Draw();
```
If you remove that Blend it just draws a solid ellipse (using the border color), which isn't what I'd expect. Not sure if this is a bug/fixable, just mentioning it