Visual style is really interesting, very much like the desaturated green and vaguely pink look. Not sure I understand how to properly charge the cue, does both charging it by holding the mouse and moving it in a push-like manner affect things?
There are some visual issues, like the cue poking through the table, but I am sure you are already aware of this.
Depending on how the cue actually works you might want to consider making the charging faster, I would also up the speed on the balls and add some really distinct "clonking" sounds when they hit each other. I think getting that sort of satisfactory almost smr-like details right will be important for a project such as this. This smells like a relaxing downtime game more than an actual score-chaser, but that is just my opinion.
Also, this needs cigars, just for flare. What do they do? Who knows, but they need to be in there, if just as a visual detail, laying in an old-timey ashtray with a mysterious glow.