The new PC/Mac version should have this as an option :)
After doing more research, I feel stupid for asking about this. But I now have a new inquiry. As much as I think the new look for the game is cool, I really think of the concept of this game as more chill and retro. If I may ask, do you think there could be a way to revert the new version back to the simple pixelated graphics? Not to offend you in any way but I really prefer them.
The new version is still going to be plenty chill, though definitely less retro :)
I'm afraid there is no option of making the new version use pixel art graphics, even though I understand some might prefer it. It'd require making two versions of everything in the game, essentially - which probably wouldn't be a good investment of the development effort as opposed to actually finishing the game :)
Again, not to push you in any way, but what if it had a similar skinning system to osu! or Minecraft, where image assets can be changed or swapped out in the games files (they tend to be in their own separate selectable folders but thats basically it) ? Maybe this could cause interesting skins based on playstyle or color.