Migrate 'text color' e2e test to Playwright (#55323)

* Migrate 'text color' e2e test to Playwright

* Remove old test files

test/e2e/specs/editor/various/format-library/text-color.spec.js

@@ -0,0 +1,54 @@
+/**
+ * WordPress dependencies
+ */
+const { test, expect } = require( '@wordpress/e2e-test-utils-playwright' );
+
+test.describe( 'Format Library - Text color', () => {
+	test.beforeEach( async ( { admin } ) => {
+		await admin.createNewPost();
+	} );
+
+	test( 'should remove highlighting element', async ( {
+		editor,
+		page,
+		pageUtils,
+	} ) => {
+		await editor.canvas
+			.getByRole( 'button', { name: 'Add default block' } )
+			.click();
+
+		await page.keyboard.type( '1' );
+		await pageUtils.pressKeys( 'primary+a' );
+		await editor.clickBlockToolbarButton( 'More' );
+		await page
+			.getByRole( 'menuitemcheckbox', { name: 'Highlight' } )
+			.click();
+
+		// Use a color name with multiple words to ensure that it becomes
+		// active. Previously we had a broken regular expression.
+		const color = page
+			.getByRole( 'listbox', { name: 'Custom color picker' } )
+			.getByRole( 'option', { name: 'Color: Cyan bluish gray' } );
+
+		await color.click();
+		await expect.poll( editor.getBlocks ).toMatchObject( [
+			{
+				name: 'core/paragraph',
+				attributes: {
+					content:
+						'<mark style="background-color:rgba(0, 0, 0, 0)" class="has-inline-color has-cyan-bluish-gray-color">1</mark>',
+				},
+			},
+		] );
+
+		await color.click();
+		await expect.poll( editor.getBlocks ).toMatchObject( [
+			{
+				name: 'core/paragraph',
+				attributes: {
+					content: '1',
+				},
+			},
+		] );
+	} );
+} );