I have the required module, but never got a change to try it until now; here's a Linux version of your game: https://www.dropbox.com/s/gnfi7tpmqy2wt58/Paint_Splashers.zip?dl=0. Feel free to put it up on itch or wherever you want. It was a suprisingly painless process overall.
Tested working on both Ubuntu 16.06 LTS and Arch Linux. On Arch I needed to use "LD_PRELOAD=libcurl.so.3 ./Paint_Splashers" as the launch command. Gamepad seemed to work okay as well (used a DualShock 3 controller via xboxdrv xbox360 emulation). Don't know what dependencies it might have, but I didn't need to install anything extra on Ubuntu (apart from stuff needed to compile the project) or on my daily driver Arch installation (which, to be fair has the steam-native-runtime metapackage that provides a lot of libraries usually required by games) to run it.