Bonjour,
I recently did an exercise where I learnt about when colour adjectives stay the same in French, e.g. "When the colour is described by a phrase containing two or more words". The phrase was "la veste bleu canard".
Here though the word "blanches" does agree with "pages" and "alternées", which I thought were the words "blanches" is describing.
I would just like to know the reason for the agreement in that phrase.
Merci :)