Believers and Chameleons

It is reported that Al-Ḥasan Al-Baṣrī – Allāh have mercy on him – said:

Verily, you will find the believer (muʾmin) consistent time after time, upon one way, showing the same face; [whereas] you will find the hypocrite (munāfiq) changing colors, trying to be like everyone around him, running with every wind.

Abū Bakr Al-Daynūrī, Al-Mujālasah wa Jawāhir Al-ʿIlm #1936