Crossword Genius

Colourful words including one between yellow and blue (7)

Ross

I believe the answer is:

oratory

I'm a little stuck... Click here to teach me more about this clue!

'colourful words' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Maybe there's an association between them I don't understand?

'including one between yellow and blue' is the wordplay.
'including' means one lot of letters goes inside another.
'one' becomes 'a'.
'between yellow' becomes 'or' (heraldic term. I am not sure about the 'between' bit.**).
'and' means one lot of letters go next to another.
'blue' becomes 'tory' (I've seen this in other clues).
'or'+'tory'='ortory'
'a' placed inside 'ortory' is 'ORATORY'.

Can you help me to learn more?

(Other definitions for oratory that I've seen before include "Rhetoric - chapel" , "Place for private prayer" , "prayer room" , "formal speech" , "Art of public speaking or small chapel" .)

I've seen this clue in The Independent.
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