What is the ruling on colored discharge (yellowish or brownish) during the supposed menstrual period?

Primary text

If a woman sees a yellowish or brownish discharge during her established menstrual days, it is considered menses. If she sees it after the established days of her menses have passed, it is not considered menses. This is affirmed by Ahmad, and similarly held by Yahya al-Ansari, Rabi'ah, Malik, ath-Thawri, al-Awza'i, Abdurrahman ibn Mahdi, ash-Shafi'i, and Ishaq. The basis for this is the verse: 'And they ask you about menstruation. Say, 'It is an ailment' (Quran 2:222), which encompasses both yellow and brown discharge. Furthermore, Aisha narrated that women would send her pads with yellow or brown discharge, and she would instruct them not to rush until they saw the pure white discharge (al-qassah al-bayda'), indicating purity from menses.