如何在r

Question

我想知道如何将此树形图的颜色更改为“＃453781FF”。我已经尝试了不同的方法，这是最好的可行解决方案，但是它并不是预期的结果，因为您可以看到此图像的颜色是粉红色。

library(readr)
library(ggplot2)
library(treemapify)

url_t = "https://raw.githubusercontent.com/frm1789/landslide-ea/master/df_treemap.csv"
df_t = read_csv(url_t)

ggplot2::ggplot(df_t, ggplot2::aes(area = n, label = country, fill = 
"#453781FF")) +
#geom_treemap(color = "red") +
geom_treemap(aes(alpha = v_alpha)) +
geom_treemap_text(fontface = "italic", colour = "white", place = 
"centre",
                grow = TRUE)