use hex color with transparency in the colors parameter

Hello Developer:

plot_ly(mtcars, 
        x = ~mpg,
        y = ~cyl,
        color = ~as.factor(cyl),
        colors = c("#3B4992A3","red","green"))

When I use a hex color with transparency in the colors parameter, it doesn't work, how can I fix it？

When I use as below, although the colors are correct, but the order is wrong.

plot_ly(mtcars, 
        x = ~mpg,
        y = ~cyl,
        color = ~as.factor(cyl),
        marker = list(
          color = c("#3B4992A3","red","green")))

首先，使用 colors 参数中的透明十六进制颜色重现所提供的 plot_ly(mtcars, ...) 示例，然后将其与 marker color 示例进行比较。跟踪颜色如何分配给因子级别，并验证透明十六进制颜色可以被接受，同时保留预期的颜色到级别的顺序。示例按预期顺序渲染出预期颜色即表示完成。