Custom Webix skin

I want to create my own Webix skin. I want to custom every CSS classes of all Webix controls. I know I can use LESS file in folow url to create a new skin same as material design skin.

But I’m not sure this LESS covers all style of all Webix controls. Can I use this LESS file or I need to modify webix.css file?

But I’m not sure this LESS covers all style of all Webix controls.
Less file covers all styles. webix.css is a result of less-to-css processing.

You can grab material.less from the material package. As for other skins, you can grab them from the skinbuilder

http://webix.com/skin-builder/webix/flat.less

change the name of file to get less file for any other skin.

Thank you. Exactly I want.
I think it should has a document about this or less files shoud included in Webix package.