如何按组对corrplot的背景进行着色？

install.packages("corrplot")  # 安装corrplot包
library(corrplot)             # 加载corrplot包

# 创建相关系数矩阵
corr_matrix <- matrix(c(1, 0.8, 0.6, 0.4, 0.2, 0.8, 1, 0.7, 0.5, 0.3, 0.6, 0.7, 1, 0.6, 0.4, 0.4, 0.5, 0.6, 1, 0.9, 0.2, 0.3, 0.4, 0.9, 1),
                     nrow = 5, ncol = 5)

# 使用corrplot函数绘制相关性矩阵并设置背景颜色
corrplot(corr_matrix, bg = "blue")

# 创建颜色矩阵
color_matrix <- matrix(c("red", "green", "blue", "yellow", "orange",
                         "orange", "yellow", "blue", "green", "red",
                         "red", "blue", "green", "yellow", "orange",
                         "orange", "green", "blue", "red", "yellow",
                         "yellow", "red", "blue", "green", "orange"),
                       nrow = 5, ncol = 5)

# 使用corrplot函数绘制相关性矩阵并设置背景颜色
corrplot(corr_matrix, bg = color_matrix)