We have an ancient farmhouse and no $$$ to fix it up like we want, so over the years I messed around with trompe l'oeil style painting on floors that needed to be refinished. I used floor grade latex and polycrilic-ed the heck out of them at the end, but they held up well and were fun to do (if you don't count the sore... well, everything at the end of the day from kneeling and balancing with a paintbrush.)
In our sunroom, which only had ratty carpet laid over subfloor, I painted a compass rose that was calibrated to magnetic north (so some far away future day when we actually put proper flooring up there and when someone tears that up to see my weird artwork, they would be able to see how much the earth's polarity had shifted - yes, I am a consummate dork).
In our mudroom, also on subfloor, I painted faux tiles, and most everyone actually thinks its actually tiled. Mwa-ha-ha-haaa.
That turned into faux crumbling plaster over faux brick that I did about 12 yrs ago in an office with actual plaster and cracks from the house shifting, so you can almost see the waviness of the lathe behind it. It was fun. And I had a guest suggest that we need to just tear out the drywall to exhibit the brick, thinking it was real. Made me feel good.
Over a patched up chimney circle, I painted a porthole that shows underwater fish in one room. And on another wall with a really bad chimney hole, I painted a forest scene with a rising sun. None are perfect, but they are art, so they don't have to be, right?
Anyway, my point is... Have some fun with your floor painting. Add a personal touch. The worst that could happen is you hate it and just paint over it. That's always been my rationale anyway.

And if you're broke and living in a place that needs a lot of work, it works as a fun 'band-aid solution' for lower priority fix-its.