/usr/share/games/slimevolley/themes/mushrooms/theme.txt is in slimevolley-data 2.4.2+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | Mushrooms
0x00 0x00 0x00
0x00 0x00 0x99
0x00 0x00 0x00
140
35
45
|