Backwards fin Hi-Flyer XL in Rusto 2X Key Lime coming along nicely.
I will admit that I felt some flexing on the fins while sanding, but at least I think it looks cool.
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I know it's already painted but you might want to consider sanding the paint off the fins and papering them with card stock. Due to the direction of the grain you are going to be dealing with broken fins and possibly having the fins shred off the tube if you fly anything hotter than a D motor.
I do like that color. Should be easy to track in the sky. In the grass, maybe not so much