Is it valid to perform ghusl after seeing the white discharge that emerged immediately after a yellowish discharge?

What was done is correct, because the second yellowish discharge has no effect and does not take the ruling of menses, due to it occurring after purity, and due to the saying of Umm Atiyyah (may Allah be pleased with her): "We did not consider the brownish or yellowish discharge after purity to be anything." It should be noted that the emission of yellowish or brownish discharge after seeing the sign of purity is considered among the things that nullify ablution (Wudu').