Ribosomes on its surface indicate this is rough endoplasmic reticulum (RER)
The human eye can distinguish only a limited number of grayscale values but can distinguish between millions of colors. So more information can often be extraced from color images. Thus, pseudo-coloring can be helpful in improving the interpretation of grayscale images.
This image has been colored to highlight the ultrastructure of this cell. The false-colored image is displayed by selecting the “Color” option beneath the image shown above.
Examine the ultrastructure of this spindle-shaped fibroblast: