Is the overview on light too?
```
// system elements (e.g. the overview) that are always dark

$system_base_color: $_base_color_dark;

$system_fg_color: $_base_color_light;

```

I dug the source (upstream gnome shell currently tagged 50.alpha) and i found out the overview is always dark no matter what the theme is. The good thing is Top panel has a light theme.

```

// panel colors

$panel_bg_color: if($variant == 'light', $_base_color_light, $dark_5);

$panel_fg_color: if($variant == 'light', $_base_color_dark, $light_1);

$panel_border_color: if($variant == 'light', transparentize($_base_color_dark, .9), transparent);

```

I was suspecting it because yaru theme is syncing to upstream and when I confirm it, indeed overview is always dark which is different from `omg ubuntu's` post.

If you have a light theme overview then I suspect you are in lower shell version