message: Updated docs for Slide bkgd and color options.
diff: @@ -32,7 +32,8 @@ Quickly and easily create PowerPoint presentations with a few simple JavaScript
  - [Presentation Options](#presentation-options)
  - [Presentation Layouts](#presentation-layouts)
  - [Creating Slides](#creating-slides)
  - - [Add A New Slide](#add-a-new-slide)
  + - [Slide Formatting](#slide-formatting)
  + - [Slide Formatting Options](#slide-formatting-options)
  - [Applying Master Slides / Branding](#applying-master-slides--branding)
  - [Adding Slide Numbers](#adding-slide-numbers)
  - [Slide Number Options](#slide-number-options)
  @@ -174,11 +175,23 @@ pptx.setLayout({ name:'A3', width:16.5, height:11.7 });
  **************************************************************************************************
  ## Creating Slides
  -### Add A New Slide
  +Syntax:
  ```javascript
  var slide = pptx.addNewSlide();
  ```
  +### Slide Formatting
  +```javascript
  +slide.bkgd = 'F1F1F1';
  +slide.color = '696969'
  +```
  +
  +### Slide Formatting Options
  +| Option | Type | Unit | Default | Description | Possible Values |
  +| :----------- | :------ | :----- | :-------- | :------------------ | :--------------- |
  +| `bkgd` | string | | 'FFFFFF' | background color | hex color code. |
  +| `color` | string | | '000000' | default text color | hex color code. |
  +
  ### Applying Master Slides / Branding
  ```javascript
  // Create a new Slide that will inherit properties from a pre-defined master page (margins, logos, text, background, etc.)
  