What does the cryptic crossword clue "React to art excitedly in brownish-red colour (10)" mean?

The wordplay uses an anagram. anagram of REACT + TO + ART = TERRACOTTA The answer is TERRACOTTA.

React to art excitedly in brownish-red colour (10)

Daily Mail Cryptic #17002 | 2 Down | 2023-01-02 flower