Black icon with 10.3.6

Here's some context how the colors changed with vanilla Drupal:
→

Gin theme is applying filter to invert the color in:

.toolbar .toolbar-bar .toolbar-tab > .toolbar-icon.is-active::before {
  filter: invert(100%);
}

The attached patch attempts to override it, but I don't know if the module should continue overriding such new changes introduced by the theme, unless those changes render the module unusable.

What do you think?