Odd petals, delicately coloured (6)
I believe the answer is:
'delicately coloured' is the definition.
The answer and definition are not the same part of speech. However, adjectives and past participle verbs can sometimes mean the same thing.
'odd petals' is the wordplay.
'odd' indicates an anagram.
'petals' with letters rearranged gives 'PASTEL'.
Can you help me to learn more?
(Other definitions for pastel that I've seen before include "Crayon - of soft shades" , "pigments mixed with gum" , "Delicate colour found in plates" , "Crayon - gentle shade of colour" , "Pale or light colors" .)