src/vs/workbench/contrib/notebook/browser/contrib/find/notebookFindReplaceWidget.ts/NotebookFindInput/applyStyles
class NotebookFindInput:	private applyStyles(): void {
		const toggleStyles = this._toggleStyles;

		this._filterButtonContainer.style.borderColor = (this._filterChecked && toggleStyles.inputActiveOptionBorder) || '';
		this._filterButtonContainer.style.color = (this._filterChecked && toggleStyles.inputActiveOptionForeground) || 'inherit';
		this._filterButtonContainer.style.backgroundColor = (this._filterChecked && toggleStyles.inputActiveOptionBackground) || '';
	}