Bollocks to that, here's Mother Nature and man proving the old saying wrong.
Complimentary colours complimenting one another as far as I'm concerned, and they look brilliant, although in the days of the 1930's or 1940's I suppose the fashionistas would have been horrified at a good eyeful of vivid red and green. Velvet of course.
As far as we're concerned beige, sage and eau-de-nil are way inferior to red and green, as somebody once said 'good taste is the enemy of creativity'.
Keep growing grass and and wash the red to keep it bright.