fix #101937. update theme colors when theme switches.

src/vs/workbench/contrib/codeEditor/browser/find/simpleFindReplaceWidget.ts

@@ -267,7 +267,7 @@ export abstract class SimpleFindReplaceWidget extends Widget {
 	public updateTheme(theme: IColorTheme): void {
 		const inputStyles: IFindInputStyles = {
 			inputActiveOptionBorder: theme.getColor(inputActiveOptionBorder),
-			inputActiveOptionForeground: theme.getColor(inputActiveOptionBackground),
+			inputActiveOptionForeground: theme.getColor(inputActiveOptionForeground),
 			inputActiveOptionBackground: theme.getColor(inputActiveOptionBackground),
 			inputBackground: theme.getColor(inputBackground),
 			inputForeground: theme.getColor(inputForeground),
@@ -280,7 +280,7 @@ export abstract class SimpleFindReplaceWidget extends Widget {
 			inputValidationWarningBorder: theme.getColor(inputValidationWarningBorder),
 			inputValidationErrorBackground: theme.getColor(inputValidationErrorBackground),
 			inputValidationErrorForeground: theme.getColor(inputValidationErrorForeground),
-			inputValidationErrorBorder: theme.getColor(inputValidationErrorBorder)
+			inputValidationErrorBorder: theme.getColor(inputValidationErrorBorder),
 		};
 		this._findInput.style(inputStyles);
 		const replaceStyles: IReplaceInputStyles = {
@@ -298,7 +298,7 @@ export abstract class SimpleFindReplaceWidget extends Widget {
 			inputValidationWarningBorder: theme.getColor(inputValidationWarningBorder),
 			inputValidationErrorBackground: theme.getColor(inputValidationErrorBackground),
 			inputValidationErrorForeground: theme.getColor(inputValidationErrorForeground),
-			inputValidationErrorBorder: theme.getColor(inputValidationErrorBorder)
+			inputValidationErrorBorder: theme.getColor(inputValidationErrorBorder),
 		};
 		this._replaceInput.style(replaceStyles);
 	}

src/vs/workbench/contrib/notebook/browser/contrib/find/findController.ts

@@ -53,6 +53,9 @@ export class NotebookFindWidget extends SimpleFindReplaceWidget implements INote
 		this._findWidgetFocused = KEYBINDING_CONTEXT_NOTEBOOK_FIND_WIDGET_FOCUSED.bindTo(contextKeyService);
 		this._register(this._findInput.onKeyDown((e) => this._onFindInputKeyDown(e)));
 		this.updateTheme(themeService.getColorTheme());
+		this._register(themeService.onDidColorThemeChange(() => {
+			this.updateTheme(themeService.getColorTheme());
+		}));
 	}
 
 	private _onFindInputKeyDown(e: IKeyboardEvent): void {