Work in progress …
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You are blimmin’ awesome 
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As always… Excellent work!
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Thanks guys
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Lovely work mate. 
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Work for life 
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@dirn my friend, I’ve found a really important one 
Cantata, mpd deamon and musicplayer
Icon=dog.unix.cantata.Cantata
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I know i’m late but this might be useful …
Yeah, Appimages and some apps installed via other ways than pacman or yay sometimes have their icons integrated into the app instead of using system icons. You could technically replace them (i did for youtube-music at some point) but that would be replaced everytime the app is updated so unless the author changes it …
It can, it is not great with all icons but could be enough
I’ll take the plasma app launcher on a fresh install as an example, looks like this by default :
Step 1 :
→ Open Panel Colorizer
→ Go to : Text And Icon Fixes
→ Locate your problematic icon and click on Effect (use Mask for non adaptative SVGs)
This should already apply colors and effect set in Appearance tab.
You can stop here if you already have set widgets colors or if the result is satisfactory, else follow step 2.
Step 2 :
→ Go to Appearance tab
→ In Element, select Widgets (or Tray Widget depending on your case)
→ Scroll down to Foreground Colors
→ Click on Enable then System
→ Set Color set to View and Colors to Text
→ Optional : Adjust values like Alpha, Saturation and Lightness
Your widgets including said icon will now follow the System Color in the same way @dirn icons does.
You can also set custom or random colors depending on your preferences :
Definitely not a perfect solution but could be enough to avoid having your eyes burned everytime you launch that one stubborn app. Also, panel colorizer will include and option to replace specific icons with the ones you want in an upcoming release, so it will soon be useless.
PS : i’m using and old KDE VM that hasn’t been updated yet, things might be slightly different now
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Wow, thanks @perletero that is a great explanation. Let me take a look into. Need time for that. So not now 
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@DenalB you might want to try the tips above. Thanks @perletero .
Ok, time to sleep. Need to be in the office early morning tomorrow 
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I’ll try that … 
in that case its not a flatpak or app image. it comes from the aur. and only the “tray-icon” or whatever the english name is in the bars doesnt want to behave. the normal icon it accepts.
mpd daemon and musicplayer are two different apps?
Cantata which is a mpd deamon and musicplayer 
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It’s a single app called cantata
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Indeed it is. It seems to be abandonware as it hasn’t been updated in 5 years.
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@perletero as @Mellow describes, it’s the icon in the systray which wouldn’t work. I have taken a clearer look in your explanation. You are referring to the app icon. This is already in monochrome. @dirn has already taken care of it. It is only the tray icon that does not appear in monochrome.
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In AUR it’s the nullobsi fork of cantata last updated at Dec 2, 2025
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Ahhhh. Good to know!
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