Have you seen the verses of Quran mentioned above?
How can disobeying Allah out of arrogance, becomes the act of love?
Surah Sad, Verse 74:
إِلَّا إِبْلِيسَ اسْتَكْبَرَ وَكَانَ مِنَ الْكَافِرِينَ
But not Iblis: he was proud and he was one of the unbelievers.
(English - Shakir)
I thought Imam Jafir-as-Sadiq(Rah) forbade the wearing of Black Clothes due to Abbasid Caliphate. Otherwise, I may be wrong but I think Prophet Muhammad and Ahlul-Bayt(Razi-Allah) did wore whole Black Clothes. In Normal Days.