如何在ggplot中线根据组改变颜色的情况下制作箱形图？

library(ggplot2)

df <- data.frame(Group = rep(c("A", "B", "C"), each = 20),
                 Value = rnorm(60))

ggplot(data = df, aes(x = Group, y = Value, fill = Group)) +
  geom_boxplot()

ggplot(data = df, aes(x = Group, y = Value, fill = Group)) +
  geom_boxplot() +
  ggtitle("Boxplot with Grouped Colors") +
  xlab("Group") +
  ylab("Value") +
  theme(legend.position = "none")  # 隐藏图例