Your changing the question again. Its:
I have a ball. It is made of plastic and it is hollow. It is also blue.
Is it more blue than it is spherical?
The ball is just as it is with no external variables. Just a ball. Light dosnt even matter were talking about the ball's characteristics not how it is percieved in different lighting conditions. Changing the question changes the answer. It says the answer in the first line anyway:
I have a ball. It is made of plastic and it is hollow. It is also blue.
It dosnt say anything about observers lighting or "if we look at it through a little window."
We only know the information given. A blue ball. Ball: sphereical. If it wasnt sphereical it wouldnt be a ball. Blue: having the characteristics to reflect blue light. As long as it reflects blue light the ball is blue.
Its not important or prudent if the ball looks different under certain conditions. The ball has not phisically changed, only the perception of the ball. The ball cannot change its characteristics, the photons dont reflect any differently off of the atoms in the ball. The problem is with our eyes.
"blue" can only be perceived in the presence of light"
So your saying that if we dont look at the ball it dosnt exist? If it cannot be percieved when its dark why could one still touch it? Remember the meaning of percieved is through any of the senses not just sight.