For both Hafiz and Siti, they only wore one single black ensemble respectively throughout all the scenes.
Apart from the transparent plastic chair, the other prop that unites the two different background is the crystal chandelier that was hanging in both Siti's and Hafiz's scenes.
As the video opens, it shows Hafiz and Siti were sitting on a transparent plastic chair with different background - Siti with white background and Hafiz with the black one.