Splash-Screen
When you start GIMP, you see the splash-screen displaying short status messages while the program is loading all its components.

Installing:

as Root

or /usr/share/gimp/2.0/images/
or /usr/share/gimp/3.0/images/
or /var/lib/flatpak/app/org.gimp.GIMP/current/active/files/share/gimp/3.0/images/

11 themes for Gimp 3 https://www.opendesktop.org/p/2274994

Full icon themes:

Uniform+ https://www.opendesktop.org/p/1012468

Acid https://www.opendesktop.org/p/1616609

Snowy https://www.opendesktop.org/p/1311570

Shiny buttons https://www.opendesktop.org/p/1012268

Yellow square https://www.opendesktop.org/p/1150789

Not superflat stickers https://www.opendesktop.org/p/1152410

White chips heavy https://www.opendesktop.org/p/1161701

Bee cells https://www.opendesktop.org/p/1012466

Smaragd https://www.opendesktop.org/p/1012162