Hi,

In "ng-uikit-pro-standard/assets/scss/angular/free/_modals.scss" there is a specific style for an icon in a button in a modal dialog :

.modal-dialog {
   .btn .fa {
      color:#fff!important;
   }
   [...]
}

This is a bit annoying when you want to add a button with a white background with a colored icon in a modal dialog

For my project I simply deleted this style and did not find any negative effect elsewhere, so I suggest perhaps removing this style from the sources.

Regards,
iakin