add a default color for Media category

[brayo-pip]

The color value is a placeholder, should you choose to change it :smile:

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:rocket:	This description was created by Ellipsis for commit 9fd6513aa4c3ecbeb4ccc8e7f80c72e6781dc532

Summary:

Added default color #F33 for 'Media' category in defaultCategories array in src/util/classes.ts.

Key points:

• Added default color #F33 for 'Media' category in defaultCategories array.
• Modified src/util/classes.ts to include the color in the data field of the 'Media' category object.

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Generated with :heart: by ellipsis.dev

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 26.13%. Comparing base (2f3d1e8) to head (cdfee31).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #593 +/- ## ======================================= Coverage 26.13% 26.13% ======================================= Files 27 27 Lines 1630 1630 Branches 281 286 +5 ======================================= Hits 426 426 Misses 1145 1145 Partials 59 59 ```

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