(Of colours) mismatch (5)
I believe the answer is:
clash
(Other definitions for clash that I've seen before include "Fail to fit" , "(Of colours) look inappropriate together" , "Mismatch" , "Disagree violently" , "Come together discordantly" .)
I believe the answer is:
clash
(Other definitions for clash that I've seen before include "Fail to fit" , "(Of colours) look inappropriate together" , "Mismatch" , "Disagree violently" , "Come together discordantly" .)