What's your favourite colour?
She wears a lot of bright colours.
What colour are your eyes?
Does the shirt come in any other colour?
Are the photos in colour or black and white?
I use the colours black and red, because it's [the] colours of Flamenge Team. (Key English Test; A2; Portuguese)
We added your story for a bit of local colour.
For an uncomplicated meal and a spot of local colour, choose the Lion's Arms at 15, Heather Lane. (Certificate of Proficiency in English; C2; German)
He passed the entrance exam with flying colours.
I worked intens[ive]ly on the course and I passed with flying colours. (Certificate in Advanced English; C1; Turkish)
I don't care what colour her boyfriend is.
Since coming to England, I have been fortunate enough to meet so many people from all over the world. At first you try to see [someone] as a typical example of the country she is from, but as you get to know her better, you do not think about her race or colour any longer: it is her personality and human qualities that you are attracted to. (Certificate of Proficiency in English; C2; Japanese)
He drew a heart and coloured it red.
I haven't changed a lot, just my hair is now quite short and I coloured it black. (First Certificate in English; B2; Swiss German)
Her views are coloured by her own bad experiences.