Why are ancillary icons blue, black and gray in Rich Content & Branding?

Ancillary icon colors depend on the availability of the ancillary and whether it is included or not in the fare:

- blue: the ancillary is available and included in the fare 
- black: the ancillary is available but is not included in the fare, it will have to be purchased 
- gray: the ancillary is not available

When the ancillary is not included the (approximate) price is referred to in the ancillary’s section.