Make Transparent Colorblock in verse

I wanna make a pinpad but on the tutorial he using a normal black color and i wanna make a white with 0.4 opacity, but idk how to make it in verse, i added using { /Verse.org/Colors }
i even asked chatgtp but this was the code he gave me
image
so i need help

You can set the opacity like this

MyWidget : color_block = color_block{DefaultColor:=MakeColorFromSRGB(1.0, 1.0, 1.0), DefaultOpacity:= 0.5}