text can not be seen when use dark scheme

[lolizeppelin]

Description of Bug

text can not be seen when use dark scheme/ but work fine on light scheme
My Framework is fuse angluar
http://angular-material.fusetheme.com/

dark scheme

light scheme

Framework fuse update scheme code
/**
* Update the selected scheme
*
* @Private
*/
private _updateScheme(): void
{
// Remove class names for all schemes
this._document.body.classList.remove('light', 'dark');
// Add class name for the currently selected scheme
this._document.body.classList.add(this.scheme);
}