Place one cooled cake layer on a cake board. Transfer about 1 cup of white frosting to a piping tip. Create a barrier to the top of the first layer of cake. Pour about 1 cup of lemon curd to the center and using a spatula, spread it into one even layer. Place the second cake layer on top. Add a crumb coat of white frosting to the cake and smooth the top and sides. Transfer the cake to the fridge to chill for about 20 minutes.
Meanwhile, divide the remaining frosting into three different bowls. Then to two other small bowls, add about 2 tablespoons each (this is going to be the center colors). For the center, I made them burgundy (black and red food coloring gel, about 1 drop each) and the other bright yellow (1 drop of yellow). For the three different colors of mauve, I added about 1 drop of fuschia + 1 drop of black. I played with these adding a bit at a time, until I reached 3 different shades, going from darker to medium to light.
Add the three different shades of mauve to different piping bags with #10 tips attached. To the top, starting with the outside, and starting with the darkest color, add one row of dots all the way around the top of the cake. Using a small offset spatula, press the dot down, making a swiping motion. Repeat with the same color. Next, move onto the medium color. And repeat with two rows. Next, move onto the lightest color, repeating with two rows.
When you reach the center, you should have a small circle that’s empty. Transfer the burgundy and yellow color of frosting to two small piping bags, snipping off the tips. Make a ton of teeny dots of each of the color to the center, mimicking the center of a flower. Transfer to the fridge to chill for about 10 minutes before slicing.