Update project colors.css to 1.3

libgrabber updated project colors.css to 1.3.



### Metadata information

```json
{
  "metadata": {
    "packageManager": "github",
    "name": "colors.css",
    "repo": "eustasy/colors.css",
    "files": {
      "include": ["colors.min.css", "colors.css"],
      "exclude": []
    },
    "path": "/home/aleksandar/projects/jsdelivr-aleksandarabot/files/colors.css",
    "localVersions": [],
    "remoteVersions": ["1.0", "1.1", "1.2", "1.3"],
    "branchVersions": []
  },
  "version": "1.3",
  "updated": true,
  "updatePath": "/home/aleksandar/projects/jsdelivr-aleksandarabot/files/colors.css/1.3.0",
  "branch": "colors.css/1.3"
}
```