Yes, i have heard from coldplay, I would not say super popular rn but they are definitely well known
Call backs and then maybe a table read if you are still unsure
Intensify in the brightness or dullness of a color. Intensity refers to the purity of a Hue. Intensity is also known as the Chroma or Saturation. A Hue is the “color” name. Use red as an example, it represents the specific wavelength of visible light. The Hues in the Color Spectrum are red, orange, yellow, green, blue, indigo, and violet.
I hope this helps!!