This red one seems to have white on one side of the center and black on the other. maybe its the pollen dust looking white.
The white one has yellow in the center but the vein work carries a yellow green through the center rib of each petal.
And last but not least, the rich royal purple. The black center and deep purple veins make it look velvety soft.
As we smile at the beauty of flowers, remember the beauty of kindness and let that beauty shine from you.