No output colourisation for `ionic serve`

**Description:**
When running `ionic serve` on an `@ionic/angular` project I get little to no colourisation of the output in the terminal.

**Steps to Reproduce:**
1. Run `ionic serve`, examine output.
2. Run `ng serve` compare with previously display output, note lack of colourisation.

**Output:**
`ionic serve`

`ng serve`

**My `ionic info`:**

```
Ionic:

Ionic CLI : 6.12.4 (/.../.nvm/versions/node/v14.15.4/lib/node_modules/@ionic/cli)
Ionic Framework : @ionic/angular 5.5.3
@angular-devkit/build-angular : 0.1100.7
@angular-devkit/schematics : 11.1.2
@angular/cli : 11.1.2
@ionic/angular-toolkit : 3.0.0

Utility:

cordova-res : not installed
native-run : 1.3.0

System:

NodeJS : v14.15.4 (/.../.nvm/versions/node/v14.15.4/bin/node)
npm : 6.14.10
OS : macOS Big Sur
```

**Other Information:**
Obviously not a huge deal as the info is all still there but thought you might want to know.

I've tried it in both macOS iTerm2 and Terminal with the same results.

It looks to be working for @mhartington in this [blog post](https://ionicframework.com/blog/massive-updates-with-version-11-of-angular/) showcasing Angular 11, unless the screenshot is of the `ng serve` command instead of `ionic serve`.

Thanks for creating this fantastic framework! 🙂