Colour of the flower (5)
I believe the answer is:
cream
This clue might be a double definition.
'colour of' is the first definition.
'cream' can be an answer for 'colour' (I know this). I am not certain of the 'of' bit.
'flower' is the second definition.
(both can mean the best example of something)
'the' acts as a link.
Can you help me to learn more?
(Other definitions for cream that I've seen before include "Best - substitute for shaving soap" , "The best part -of the crop" , "Fat-rich part of milk" , "treat for cat?" , "Milk product" .)