Colourful, eccentric ogre going round the bend (5)
I believe the answer is:
rouge
'colourful eccentric ogre going round the bend' is the definition.
I can't judge whether this defines the answer.
'eccentric ogre going round the bend' is the wordplay.
'eccentric' indicates anagramming the letters.
'going round' means one lot of letters goes inside another (some letters go around others).
'the bend' becomes 'U' (a U-bend is a kind of bend - pipe under sink).
'ogre' is an anagram of 'roge'.
'roge' enclosing 'u' is 'ROUGE'.
Can you help me to learn more?
(Other definitions for rouge that I've seen before include "Blusher" , "Red face powder" , "Cosmetic powder" , "Red cosmetic to colour cheeks" , "Face-reddening cosmetic" .)