Colours...

In September 1890 Wolverhampton Wanderers ran out for their league game against newly elected Sunderland  at  Newcastle Road in the red and white stripes they had been wearing for the past five seasons. The home side, of course, were also wearing red and white stripes, the colours they had adopted in 1887.
The Football league took measures to ensure that this did not happen again.  
In the Football League's AGM of 1891clubs were required to register their colours for the following season.No two clubs could register the same colours.

The text is taken from The Burnley Express, 11th July 1891.

Accrington

Aston Villa

Blackburn Rovers

Bolton Wanderers

Burnley

Derby County

Everton

Notts County

Preston North End

Sunderland

West Bromwich Albion

Wolverhampton Wanderers

Changes for the 1891-92 season were:

Bolton Wanderers

Burnley

Derby County

Strangely Derby adopted a strip that was very similar to Notts County's

Everton

Wolverhampton Wanderers

Newly elected:

 Darwen

Darwen's previous colours.

Stoke

Stoke's previous colours.

Burnley Express, 11th July 1891