Proteinaceous pigment which controls the activities concerned with light : -

Phytochrome is a blue-green chromoprotein (a protein with a light-absorbing chromophore).
It exists in two forms, $P_r$ (absorbs red light, 660 nm) and $P_{fr}$ (absorbs far-red light, 730 nm), and controls light-dependent processes such as flowering (photoperiodism), seed germination, de-etiolation and leaf expansion.
Chlorophyll, anthocyanin and carotenoids are not proteins.
So the proteinaceous pigment is phytochrome.