clear;clc
v=de2bi(0:7);
f=[1 2 4 3;5 6 8 7;1 2 6 5;3 4 8 7;1 3 7 5;2 4 8 6];
p=patch('Faces',f,'Vertices',v,'facecolor','interp','FaceVertexCData',v,'edgecolor','none','CDataMapping','direct');
view(45,45);axis equal;
xlabel('r');ylabel('g');zlabel('b');
for k=linspace(0,1)
set(p,'vertices',k*v,'facevertexcdata',k*v);
drawnow;
end