This is my take on tc_fea's Rose with Stem.

I remixed a bit, to accommodate a 8mm or 10mm RGB LED, hollowed out the stems for wiring, and made a base for 3 of these fine flowers.

1 print flowers in clear or white.
2 drill hole in bottom to accommodate the LED you're going to use
3 print stem - either Stem.stl or StemBent.stl or a mix of both
4 print base

1. solder 6" long wires to LEDs and run through hollow stem. place LEDs in flower. Glue flower to stem.
2. solder onto Arduino or other controller.
   7 give to your girl
   8 enjoy the evening of having a love slave.