Paint box set? (6,2)

I believe the answer is:

colour tv

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

'set?' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'paint box' is the wordplay.
'paint' becomes 'colour' (colouring is a kind of painting).
'box' becomes 'tv'.
'colour'+'tv'='COLOUR TV'

Can you help me to learn more?

I've seen this clue in The Telegraph.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.