according to the lesson (https://french.kwiziq.com/revision/grammar/how-colour-descriptions-adjectives-change-according-to-gender-and-number) the correct way to say it is:
J'aime les roses roses. -- I love pink roses.
In general, colors derived from object names such as orange (an orange) or marron (le marron/the chestnut) stay immutable. However, the color rose (pink) does vary, even though it seems to derive from a real object, too.
-- Chris (not a native speaker).
Greetings, -- Chris (not a native speaker).
Sign in to submit your answer
Don't have an account yet? Join today
Test your French to the CEFR standard