Trying to find a specific version of Gens Kmod

[Chipper_52]

I lost the version of the emulator where when you used a key combination like CTRL + F4, the pink background was turned on, and when you took a screenshot of a sprite, the background was transparent, there was also a function where when you pressed ESC, a pause was turned on, and when you pressed \, the game was played frame by frame, please, who knows, tell me what version this is