However, I must check a few things before we could say Berlin and Kay were wrong because they had four definite criteria for calling colour names "basic colour words" as such. 

 So, is it true for those two words in Portuguese that 
 *both of them consist of one single morpheme (eg "light-brown" excluded in English) 
 *both of them are often used (eg "indigo" excluded in English) 
 *both of them can be applied to a wide range of objects (eg "blond" excluded in English) and 
 *neither of them are part of another colour category (eg "scarlet"  excluded in English, being a kind of "red") ? 

 If your answer is definitely "yes, yes, yes and no" about the two words in Portuguese, then the Berlin and Kay statement should indeed be removed from the article.