Ruddy wild cries at the end of the race! (6)
I believe the answer is:
cerise
'ruddy' is the definition.
(thesaurus)
'wild cries at the end of the race' is the wordplay.
'wild' is an anagram indicator.
'at' means one lot of letters go next to another.
'the end of the' suggests the final letters.
The final letter of 'race' is 'e'.
'cries' with letters rearranged gives 'ceris'.
'ceris'+'e'='CERISE'
(Other definitions for cerise that I've seen before include "Light clear red" , "Light red colour" , "EEC, sir, is red" , "Light purplish red" , "Bright cherry-red colour" .)