Transparency out of xrdb colors?

[Trollwut]

Hi folks!

I think you all know that pywal is awesome.

I use polybar and therefore also use the colors out of xrdb to be used there. E.g.:

background = ${xrdb:color2}

Is there a possibility to have some alpha channel on these colors? Before wal, I used background = #00222222 (transparent color) and looked for wallpapers that fit to that. But as I now use wal, not every wallpaper is capable of having a transparent color and therefore text might not be readable.

I don't want to have a solid color, as this makes the polybar a bit too much distracting, but a half-transparent background color would be a good compromise.

[dylanaraps]

You can workaround this like so:

# .bashrc

# source wal colors.
source ~/.cache/wal/colors.sh

# export envar with alpha set.
export color0_alpha="#22${color0/'#'}"

; polybar/config

[bar/top]
background = ${env:color0_alpha}

[dylanaraps]

Also, see: #142

[Tarch1]

HI,
I've a proble whit obliviusly the transparency of polybar, when bspwm start whit this config:

#! /bin/sh
sxhkd &
chmod a+w /sys/class/backlight/intel_backlight/brightness &
setxkbmap -layout it &
numlockx &
xsetroot -cursor_name left_ptr &
#feh --bg-fill --randomize ~/.wallpapers/* &
xautolock -time 5 -locker "gllock" &
./.config/low-battery.sh -n &
wal -i ~/.wallpapers/ &
./.config/polybar/launch.sh &
picom --experimental-backends &
bspc monitor -d I II III IV V

and the polybar relative colors

[colors] background = ${env:color0_alpha} ;background = ${xrdb:color1:#222} foreground = ${xrdb:color7:#222} foreground-alt = ${xrdb:color7:#222} primary = ${xrdb:color1:#222} secondary = ${xrdb:color3:#222} alert = ${xrdb:color5:#222}
polybar set the background color to black whitout the transparency, but if I use this script

./.config/polybar/launch.sh

in a terminal after the bar is started transparency is working.
I don't know if this is the right place to post but for now i try here :)

I've found this error in /tmp/polybar1.log

polybar|error: Invalid value for "bar/bar1.background", using default value (reason: Environment var ${color0_alpha} does not exist (no fallback set))

[marssaljr]

I know it's closed, but maybe you can try this:

# polybar/config

[bar/top]
color = ${xrdb:color0}
background = "#00${color}"

or

# polybar/config

[bar/top]
background = "#00${xrdb:color0}"