Fix color from CSS when reading from HTML

In case we generate Spreadsheet from html file and the code
in file have text color in css "color:#FF00FF" it will showing
as black color because it will render like rgb content with } "FF00FF}"
So, we fix it by adding missing bracket "{".

Closes #831

CHANGELOG.md

@@ -23,6 +23,7 @@ and this project adheres to [Semantic Versioning](https://semver.org).
 - Improved memory usage and performance when loading large spreadsheets - [#822](https://github.com/PHPOffice/PhpSpreadsheet/pull/822)
 - Improved performance when loading large spreadsheets - [#825](https://github.com/PHPOffice/PhpSpreadsheet/pull/825)
 - Improved performance when loading large spreadsheets - [#824](https://github.com/PHPOffice/PhpSpreadsheet/pull/824)
+- Fix color from CSS when reading from HTML - [#831](https://github.com/PHPOffice/PhpSpreadsheet/pull/831) 
 
 ## [1.5.2] - 2018-11-25
 

src/PhpSpreadsheet/Reader/Html.php

@@ -634,7 +634,7 @@ class Html extends BaseReader
 
                     break;
                 case 'color':
-                    $sheet->getStyle($column . $row)->applyFromArray(['font' => ['color' => ['rgb' => "$style_color}"]]]);
+                    $sheet->getStyle($column . $row)->applyFromArray(['font' => ['color' => ['rgb' => "{$style_color}"]]]);
 
                     break;
             }

tests/PhpSpreadsheetTests/Reader/HtmlTest.php

@@ -43,4 +43,22 @@ class HtmlTest extends TestCase
 
         self::assertSame($expected, $actual);
     }
+
+    public function testBackgroundColorInRanding()
+    {
+        $html = '<table>
+                    <tr>
+                        <td style="background-color: #000000;color: #FFFFFF">Blue background</td>
+                    </tr>
+                </table>';
+        $filename = tempnam(sys_get_temp_dir(), 'html');
+        file_put_contents($filename, $html);
+        $reader = new Html();
+        $spreadsheet = $reader->load($filename);
+        $firstSheet = $spreadsheet->getSheet(0);
+        $style = $firstSheet->getCell('A1')->getStyle();
+
+        self::assertEquals('FFFFFF', $style->getFont()->getColor()->getRGB());
+        unlink($filename);
+    }
 }