Can't apply CSS class to a modal title

I want the title text to be black. The CSS class is not applied to the div with the text but an outer div.

https://snippet.webix.com/btepn29i

Hello,

Please add

 .webix_view.webix_control.webix_el_label {
    color: black;
  }

CSS class for label : https://docs.webix.com/desktop__label_css.html

Sample: https://snippet.webix.com/pm6vm1cf

Okay thank you I kept the black and added styles for

.webix_view.black.webix_el_label.

I can’t figure out how to set the close icon to be black.

https://snippet.webix.com/vlzrkayz

For some reason in my application when I am using the Material theme. It is white text on a white background.

Selected tabs have a blue background above the blue text.

You need to add

.webix_icon.fa-times:before {
   color: black;
  } 

https://snippet.webix.com/gc4d4vh0

For some reason in my application when I am using the Material theme. It is white text on a white background.

Could you please clarify which version of Webix do you use?

Webix v.5.4.0

The material theme I have taken from the same source as the snippets. It is version v.5.2.0