Translations:LXQt/67/en
From Manjaro
This Icon can be changed by opening the following folder with root privileges:
/usr/share/lxqt/themes/<theme name>/
Replace <theme name> with the name of the theme you are currently using. The name of your current theme can be found in System Settings>LXQT Configuration Center>LXQtAppearance>LXQt Theme. The Start Menu icon will only get changed for <theme name>. All other themes still use the default icon!