MATLAB: How to recombine two color channels after separating all the channels

Question

I separated the color channels of an image, and i want to combine every two channels again without the third, how can I perform this?

Answer 1

Is this?

color_image(:,:,2:3); % Having only two colors plane 

or

color_image(:,:,1:2);

or

color_image(:,:,[1,3]);