This is the photo that made me see that my camera changes the colors when I switch the background. I am taking the shots of the two at the same time. So couldn’t apply advice to this one.
Love this - the flower has a much more fresh and clean vibrancy when viewed on black - not a scientist , but would it do with the difference in the absorption of light on the two different background surfaces !!!! ( physics at school is so may years ago now !! ha !) fav