I do not have access to d information on new quartzite varieties. However, to the best of my knowledge, I did not find any information about color variations in Brazils quartzite Gontero. It is mainly characterized by its beige and gray tones and sometimes has subtle veining in lighter tones. However, it is always recommended to check with a local quartzite supplier to get the most up-to-date information on any quartzite variety.