Navbar colors not working after upgrade to Bulma 1.0

[AbstractionsAs]

This is about Bulma.

Overview of the problem

After upgrading from Bulma 0.9.3 to Bulma 1.0, the navbar behaves differently in two important ways as soon as you add a color:

1. The "is-active" modifier no longer has any visual effect
2. The inverted text colors behave differently. Eg. when using primary, the labels are inverted to white in Bulma 0.9.3, but are black in Bulma 1

Steps to Reproduce

1. Create a navbar
2. Add a few "navbar-item"s
3. Set one "navbar-item" to "is-active"

At this point, everything seems to work

4. Add a color to the navbar, e.g. "is-primary"

Expected behavior

1. The avtive item should be styled as active
2. The text should be inverted

Actual behavior

1. The active item is now indistingiushable from the rest
2. The text is black