Indigo (bus service)

1992–1994	1994–1998	1998–2003	2003–2008
2008–2017	2011–2017	2016–2018	2018–present

Rainbow 5

1992–1994

Indigo was originally Rainbow 5, and was the first Rainbow route.

1994–1998

The number five changed the styling and colour.

1998–2003

The logo changed a bit, and the number five was changed slightly with a new colour.

2003–2008

This route got a huge change, the Excels turned into Solars, with new features: bigger buses, more seats, leg room, space age technology, audio announcements, real time tracking, and a new timetable. This was the first bus to have the 2002 Trent Barton livery.

Indigo

2008–2017

Rainbow 5 got a stylish makeover, with new Eclipses, and more new features: air–con, a new name, leather seats, and an updated timetable.

2011–2017

Starting in late-July 2011, Indigo runs all day, every day and is the first bus to run 24/7.

2016–2018

All the Indigo buses got a major makeover and the frequency went from every 6–7 minutes to every 5 minutes, and now, every 10 minutes to improve reliability. There was a slow transformation, causing the old Indigo buses to all be refurbished by 2017.

2018–present

In 2018, the colour looked a bit darker, and the 24/7 was dropped from the logo, but is seen 24/7 from Long Eaton to Nottingham, along with this change, the route got new E200MMCs and an overall more modern feel.