Presets

Within the config folder of your theme, you can optionally include preset files, which, when selected, will override specified theme settings.
This is a great way to get more mileage out of one theme by giving the users a few starting points that have unique looks and feels.

preset_color.json

{
"display_name": "Preset Color",
"overrides":
{
"color_primary": "#444",
"color_light": "#f9f9f9",
"color_dark": "#333",
}
}