Note: The spelling 'technicolour' is also used in British English for meaning 2.
1.
~ is a system of colour photography used in making cinema films. (TRADEMARK)
...films in ~.
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2.
You can use technicolor to describe real or imagined scenes when you want to emphasize that they are very colourful, especially in an exaggerated way. (INFORMAL)
I was seeing it all in glorious technicolour: mountains, valleys, lakes, summer sunshine.
...~ dreams.
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