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Re: They broke the CSS custom color settings in 3.20

On 12.11, Stefan Salewski wrote:
> Setting the colors was
> done this way for GTK 3.18:
> const
>   str0 = ".tooltip {background-color: rgba($1, $2, $3, 0.9); color: rgba($4, $5, $6, 1.0); \n}"

it's tooltip { background-color: foobar }.
Unless the theme sets a background image of course, in which case your
background-color won't have any effect...

> Even for a simple test application setting of background color seems
> not to work any more:
> https://github.com/ngtk3/nim-gtk3/blob/master/test/colors.nim

It's label{} for labels, entry{} for entries, etc. The documentation
under https://developer.gnome.org/gtk3/stable/GtkEntry.html contains a
"CSS Nodes" section explaining how to target the individual nodes of the
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