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## Fifty shades of cold
### Instructions
You've been asked to freshen up a webpage, by displaying shades of cold colors.
Check the `colors` array provided in the data file below.
Write the `generateClasses` function. It creates a `<style>` tag inside the `<head>`. It should generate one class for each color in the `colors` array, which sets the `background` attribute like so:
```css
.blue {
background: blue;
}
```
Write the `generateColdShades` function which creates a `<div>` for each color of the `colors` array, whose name contains `aqua`, `blue`, `turquoise`, `green`, `cyan`, `navy` or `purple`. Each `<div>` must have the corresponding generated class and display the name of the color, like following:
```html
<div class="blue">blue</div>
```
The function `choseShade` is triggered when clicking on a `div`. Write the body of this function. It accepts the shade of the clicked element as an argument, and replaces all the classes of all the other elements by the chosen shade.
### Files
You only need to create & submit the JS file `fifty-shades-of-cold.js`, we're providing you the following files to download and test locally:
- the HTML file [fifty-shades-of-cold.html](./fifty-shades-of-cold.html) to open in the browser, which includes:
- the JS script running some code, and which will enable you to run yours
- the data file [fifty-shades-of-cold.data.js](./fifty-shades-of-cold.data.js) from which you can import `colors`.
- feel free to use the CSS file [fifty-shades-of-cold.css](./fifty-shades-of-cold.css) as it is or you can also modify it.
### Expected result
You can see an example of the expected result [here](https://youtu.be/a-3JDEvW-Qg)
### Notions
- [head tag](https://developer.mozilla.org/en-US/docs/Web/API/Document/head)
- [style tag](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/style)
- [className](https://developer.mozilla.org/en-US/docs/Web/API/Element/className)
- [classList](https://developer.mozilla.org/en-US/docs/Web/API/Element/classList): `contains()`, `replace()`