miscellaneous spiral staircase

Now that realy looks great, but I am very puzzled about colors and lighting. Where does that gradation in colors come from? Do you have other views of this motive where one can see what is painting and what is lighting?

It is realy fascinating.

Dear Alexandre. Let me try to answer about light and colours in my bad english.. At the right hand is the door.. The white part is below the stairs (or the ceiling where you are). Yellow (going into brown)is the wall. A point of light just in the middle (a window) and more dark at the end.. I hope to have expressed the idea with my bad english.

Cheers from Canary Islands

Beautiful shape.