It is natural white colour.
Back of the light: (H) 12.5cm x (W) 9cm
Panel: (H) 16.5 x (W) 9 cm
Full light: (H) 12,5 (D) 4,5 (Top/panel) 16,5.
I am afraid that the 25 seconds timer cannot be extended but this light can stay on continuously on mode 1.