nope bro wrong answer.
herez the right one.
after the death of Baba Banda Bahadar Sikhs splitted into two groups, Tatt Khalsa and Bandaee Khalsa. according to Tatt Khalsa, Granth Sahib was their Guru after Guru Gobing Singh. and according to Bandaee Khalsa, Baba Banda Bahadar was their Guru after Guru Gobing Singh. they had different dress code. Tatt Khalsa wore blue clothes while Bandaee Khalsa used to wear red clothes.