[1.0.0-rc.1] On hover buttons highlight

[MicheleLucini]

Materialize buttons
Codepen example

Expected Behavior

Would be nice if the lighten of .btn and .btn-large with materialize color classes would keep the lighten effect on hover. And the flat buttons would get darker.

Current Behavior

The lighten of the background color of buttons on mouse hover works only with the default color, if you choose another class color (red, blue, etc, even teal that is the default color) the effect doesn't appear anymore.

Possible Solution

Handle :hover of .btn.blue, .btn-large.blue etc to give it that lighten effect on mouse hover.

[MicheleLucini]

Now that I look back at it, I could just add this myself:

.btn:hover {
  filter: brightness(120%);
}

[MicheleLucini]

I also noticed that flat buttons are not highlighted on hover, maybe it's intended?

.btn:hover,
.btn-large:hover {
  filter: brightness(115%);
}

.btn-flat:hover {
  background: rgba(0,0,0,0.1);
}

[MicheleLucini]

This rule should be removed too

.btn:hover, .btn-large:hover, .btn-small:hover {
    background-color: #2bbbad;
}