can you elaborate on colors (Groove)? Why does the landing page has orange, green + two shades of blue? Blue is in their logo, but red is missing. Instead there

can you elaborate on colors (Groove)? Why does the landing page has orange, green + two shades of blue? Blue is in their logo, but red is missing. Instead there are orange and green. I have little to no experience in visual design. But intuitivelly I would expect fewer colors and better adjusted to match brand colors.