| Index: third_party/polymer/v1_0/components-chromium/paper-tooltip/README.md | 
| diff --git a/third_party/polymer/v1_0/components-chromium/paper-tooltip/README.md b/third_party/polymer/v1_0/components-chromium/paper-tooltip/README.md | 
| index 3af8acd93d5c7a1ffb8740238b12d19d8c375f90..67a9fa488d4af4de254e7ee3f759dd523e138d43 100644 | 
| --- a/third_party/polymer/v1_0/components-chromium/paper-tooltip/README.md | 
| +++ b/third_party/polymer/v1_0/components-chromium/paper-tooltip/README.md | 
| @@ -1,4 +1,28 @@ | 
| # paper-tooltip | 
|  | 
| -`<paper-tooltip>` is a Material Design label that appears when the user hovers | 
| -over an element with the cursor, or focuses the element with the keyboard. | 
| +`<paper-tooltip>` is a label that appears on hover and focus when the user | 
| +hovers over an element with the cursor or with the keyboard. It will be centered | 
| +to an anchor element specified in the `for` attribute, or, if that doesn't exist, | 
| +centered to the parent node containing it. | 
| +Example: | 
| + | 
| +```html | 
| +    <div style="display:inline-block"> | 
| +      <button>Click me!</button> | 
| +      <paper-tooltip>Tooltip text</paper-tooltip> | 
| +    </div> | 
| +    <div> | 
| +      <button id="btn">Click me!</button> | 
| +      <paper-tooltip for="btn">Tooltip text</paper-tooltip> | 
| +    </div> | 
| +``` | 
| + | 
| +### Styling | 
| +The following custom properties and mixins are available for styling: | 
| + | 
| +Custom property | Description | Default | 
| +----------------|-------------|---------- | 
| +`--paper-tooltip-background` | The background color of the tooltip | `#616161` | 
| +`--paper-tooltip-opacity` | The opacity of the tooltip | `0.9` | 
| +`--paper-tooltip-text-color` | The text color of the tooltip | `white` | 
| +`--paper-tooltip` | Mixin applied to the tooltip | `{}` | 
|  |