How to make a color sphere as colorbar in 3D image

I‘m looking to create a color sphere with different colors in all directions, and use these colors as the colorbar of the 3D image

[Adam]

I'm not aware of any colour space that is defined over a sphere. How do you intend the sphere to be populated with colour?

[shuang lei]

I want to define different colors with angles in polar coordinates.

Answer 1

[KSSV]

[X,Y,Z] = sphere; 
surf(X,Y,Z)
colorbar

[shuang lei]

Thank you for your answer. I want to make a three-dimensional velocity direction map of particles, and use the color of the color sphere to represent the flow direction at all angles.