This was a really fun setup for a game using gravity to impact the orb. It was definitely helpful being able to see a preview of where it would go. Though the dark blue was a bit hard to see on the black background (by a bit I mean almost invisible).
Base concept wise though there's a decent amount of potential for comboing the current colors and maybe even adding more colors which would be crazy. Depending how you could end up adding them obviously.
Some tweaking of the colors and such though would be really helpful. Otherwise maybe some more indication on the fact that the orbs target the mouse, or possibly just something to move around the screen that they target would be a nice QoL change.
Really fun overall tho.