src/vs/base/browser/ui/checkbox/checkbox.ts/Checkbox/applyStyles
class Checkbox:	protected applyStyles(): void {
		if (this.domNode) {
			this.domNode.style.borderColor = this._checked && this._opts.inputActiveOptionBorder ? this._opts.inputActiveOptionBorder.toString() : 'transparent';
			this.domNode.style.color = this._checked && this._opts.inputActiveOptionForeground ? this._opts.inputActiveOptionForeground.toString() : 'inherit';
			this.domNode.style.backgroundColor = this._checked && this._opts.inputActiveOptionBackground ? this._opts.inputActiveOptionBackground.toString() : 'transparent';
		}
	}