Please check entry #126 this ogo reflect how the actual spectrum prism work, the white light come from the left side and reflected by the side of prism into the rainbow colors.
it also speak as the tagline said, it change the input (white light - your image) and make it brighter with colors, the black part of the prism represent the darker side, while the other one is the brighter one (with colors) > Brighten your image.
Please feel free to ask if you need to see other changes/revisions :)
new concept on entry #152 > spectrum of color reflected from the bottom part of the prism, my concern is to keep it as a real spectrum of light work on a prism lens.