src/vs/editor/contrib/find/browser/findOptionsWidget.ts/FindOptionsWidget/_applyTheme
class FindOptionsWidget:	private _applyTheme(theme: IColorTheme) {
		let inputStyles = {
			inputActiveOptionBorder: theme.getColor(inputActiveOptionBorder),
			inputActiveOptionForeground: theme.getColor(inputActiveOptionForeground),
			inputActiveOptionBackground: theme.getColor(inputActiveOptionBackground)
		};
		this.caseSensitive.style(inputStyles);
		this.wholeWords.style(inputStyles);
		this.regex.style(inputStyles);
	}