Ha! You guys are too much. I wouldn't have the heart to paint someones bow, no matter how bad they wanted it painted.
To my best knowledge, hydrofilm is a difficult task to say the least. Especially if you've never done it. Getting it to stick well enough may be quite challenging. There are certain preping steps that would need done.
If you're dead set on painting it, maybe try this.
First, take some ultra fine sandpaper and sand it lightly to rough it up. Clean it and spray it with primer first. Then you can paint your base coat color and if you want, blotches of different colors on top of that and some limbs to finish it off.
Actually now that I wrote that...it sounds like a fun project.