In a section Schedule > Table, tab SHOW of the left filter allows you to navigate with the flights colouring.
Open the filter and in a section Colours you can find 4 available checkboxes for the usage. Below are explained examples of different options of flights colouring when particular checkboxes are marked.
Flight type & Aircraft colours - shows colours for a column 'Flight No.' and a colour of an aircraft (defined in aircraft profile, section Fleet) in a column 'ACFT'.
Aircraft colours & Entire leg row - shows an aircraft colour throughtout the entire row.
Flight type & Entire leg row - shows a flight type colour throughtout the entire row.
Flight type, Aircraft colours & Dim ferry legs - shows flight type colour dimmed and the aircraft colour.
Flight Support operators also have an additional checkbox 'Operators colours' which shows a colour of a particular sub-operator defined in a section Settings > Operator Colours.