Giving gods and goddesses different names does not mock their individuality, anymore than giving human beings different names mocks theirs. Humans put upon deities aspects of themselves as human beings - and we are all individuals, as are the gods. A rainbow is made up of many colours, with different names, but which together make something else which would not exist as a whole without each individual part. As a meteorologist, I know that there are different rainbows. When water droplets in the atmosphere are small, rainbows occur with blurred colours.
Larger raindrops reflect light into more sharply defined bands of more brilliant colours.
White 'fog bows' occur in mist. Almost semi-circular rainbows occur at dawn and sunset. When the sun is high in the sky, rainbows have smaller arches. Circular rainbows can be seen by passengers and crew on cloud layers or the sea's surface below aircraft. BUT whatever type of rainbow occurs, each person sees their own individual rainbow at the same time, because they are all looking from a slightly different viewpoint.