Subdued blue and violent red don’t go together (11)

I believe the answer is:

downtrodden

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'go together' is the definition.
Both the answer and definition are adjectives. Maybe you can see an association between them that I can't see?

'subdued blue and violent red don't' is the wordplay.
'subdued blue' becomes 'down' (both can mean sad. I am not sure about the 'subdued' bit.).
'and' means one lot of letters go next to another.
'violent' is an anagram indicator.
'red'+'dont'='reddont'
'reddont' anagrammed gives 'trodden'.
'down'+'trodden'='DOWNTRODDEN'

Can you help me to learn more?

(Other definitions for downtrodden that I've seen before include "Subjugated" , "exploited?" , "Subservient" , "Oppressed by people in power" , "Oppressed or treated badly by someone in power" .)

I've seen this clue in The Sunday Times.

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