There are MANY things that are black and blue.
Eevee
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set.seed(34667830) plot(rnorm(100),rnorm(100))
library(tidyverse) ggplot(diamonds, aes(x = carat, y = price)) + geom_point()
ggplot(diamonds, aes(x = carat, y = price)) + geom_point() + theme_minimal() + labs(title = "We need diamonds with more carrots")