The text in some of the buttons is black (#111)

[dushkostanoeski]

I'm using bootstrap 4 beta and I'm importing it from node_modules.

The text inside a primary, success and danger button is white, but for the others it is #111.

[mrholek]

Bootstrap 4 uses this function to set text color inside buttons and badges:

`// Color contrast @mixin color-yiq($color) { $r: red($color); $g: green($color); $b: blue($color);

$yiq: (($r 299) + ($g 587) + ($b * 114)) / 1000;

@if ($yiq >= 150) { color: #111; } @else { color: #fff; } }`