Cube example draws a white cube instead of pink

[mittpat]

examples/shapes/cube.rs draws a white cube, even though set_color(1,0,1,1) is called.
using set_uniform_color(1,0,1,1) instead does set the color of the cube to pink.

on ubuntu 22.04.4

thanks for the library, this is fun to use to learn Rust!

[ElhamAryanpur]

should be fixed by now