custom value select background color

[cdebackere]

I tried to change the background color of the custom value select with

.blackBack {
background-color: #000;
}


but it obviously makes the background black of the object (not needed), rather that the vselect popup.

So how can I modify the popover ad vselect of this object? (probably need to tune more than just backcolor)

[admin]

You can set the background color in the Visualization parameters. It's possible to set parameters for a single visualization element.