While I can and do paint in many different styles the subject that mostly takes priority in my work is light. Whether it’s a bird in flight or a flower in bloom it generally will not interest me unless the light is right. Without light there is no colour, colour is light. Colour is light and yet the most dramatic light is portrayed in tonal paintings like those of Caravaggio. So a painting must have light and therefore it must also have dark as you can not have one without the other.
I am not sure if there is anything else that really appeals to me like light except maybe mystery.