Colour of the rainbow (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">colour of the rainbow</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for indigo that I've seen before include "type of dye" , "One of the colours of the rainbow" , "Deep-blue dye or colour" , "Mood - (Duke Ellington)" , "Spectral colour" .)
(Other definitions for violet that I've seen before include "A flower for a girl" , "Flower-girl" , "William's girl" , "Rainbow colour; flower" , "Shade of purple" .)