Choosing what color format to publish your photo in is a very important decision. It is crucial to how you present your message, and to how your message communicates.
Sometimes, changing the color format leaves your photograph lacking details that it has when it is published in color. For example, the first two photographs are the same image.
In the first image, the colors are super vibrant, and the contrast between the orange and red rocks against the blue sky is superb. This photograph works very well as a color and a black and white.
I chose to publish it in black and white because of how well the contrast works for the photograph, and to give it more of a feeling of timelessness. The black and white seems to bring out more of the detail in the rock formation, and makes you appreciate the beauty of nature more.
Now let's look at the second pair of images.
The first one, in color, is the one I decided to publish. I chose to do this one in color because of all the colors the viewer would be missing out on if published in black and white: the blue sky, the red and orange in the rocks, the different hues of greens in the trees, the stark white of the snow and the soft white of the clouds.
The black and white photograph is still beautiful, because let's face it, you can't take the majestic feeling away from the rock formation. However, as stated before, now the viewer is missing out on all of the beautiful colors that mother nature is presenting at that scene.
Choosing what color tone you want to publish your photograph in is entirely up to you and what you want your photograph to communicate. Same thing with choosing if you want to saturate the colors or wash them out.
Choose wisely. I recommend trying all of the options you are considering, and sitting down and comparing and contrasting between them to ensure that you are picking the best option for your photograph.