# Colors and palettes

No modifications are currently possible in backtivisda; changes must be made directly in the data files.

## Colors

Colors are defined in the file `local/data/colors.json`.
```json
{
    "version": "1.0.26",
    "colors": [
        {
            "tags": "",
            "html": "#ffffff"
        },
        {
            { "tags": "",
            "html": "#000000"
        }
    ]
}
```
* Each color is defined in html code with 6 characters. Letters must be in lower case.
* For tags, see [documentation](/en/tags).

## Palettes

Palettes are defined in the `local/data/palettes.json` file. They are simply a series of color arrays of different sizes.

```json
[
    [ "#ffffff" ],
    [ "#000000" ],
    [ "#000000", "#ffffff" ],
]
```