I see him as not really having access to fancy get-ups, and not one to sew himself something... so he would go with regular street closes.
I thought a clever homage to the yellow shirt, would be along the lines of him coming home after his transformation (perhaps being slightly enlarged)... He goes into his closet for a change of closes, and pulls out a yellow button down. He puts it on, but it is too tight. He is only able to button the bottom couple of buttons, thereby leaving the deep cleavage, exposing his chest. He looks in the mirror for a second... giving moviegoers a view of the classic Luke Cage appearance... He then winces and pulls the shirt off. Kinda like the comment in X-Men about "yellow spandex".