Wa'alaikumassalam! Baby poop colour memang macam-macam depending on what they're eating lah, kalau breastfed lain, formula lain, pastu once they start solids lagi lain. Without seeing the exact colour myself, I'd suggest snap a photo and check with your pediatrician just to be sure, especially if ada other symptoms macam baby seems uncomfortable or constipated. A few of my mum friends panicked over poop colour before realizing it's totally normal, tapi better safe than sorry kan, especially with newborns!