There's still some overcast today, but I took the pictures anyway. The colors are basically the same, even in the tube! What's different is the texture. Rebel is a Satin formula and Forbidden Burgundy is a Rouge Volupté. The Rouge Volupté formula makes Forbidden Burgundy a lot creamier than Rebel. Almost too creamy for my personal taste. It feels like it melts upon contact with my lips and that it could have the potential to slide around and feather throughout the day. I did a side by side comparison on the lips, too. The colors still look the same, except Forbidden Burgundy is a bit glossier than Rebel. Note that I like to apply my lipstick full force to get the true color. No dabbing for me. As much as I love the elegant tube and the prestige of the YSL brand, I think I would select Rebel if I was forced to choose between the two. I think the color would stay in place and last longer since it's not as creamy/slippery/slick as Forbidden Burgundy. Forbidden Burgundy is also my first Rouge Volupté and I'm not sure I'm going to try another one. I think I prefer YSL's Rouge Pur Couture formula over the Rouge Volupté, but I still want to try the Rouge Volupté Perle. MAC Rebel - YSL 12 Forbidden Burgundy
You can see the color is the same.
This picture shows the different finishes.
The color is the same even in the tube.