I've had this lipstick for a week now and try as I might, I don't seem to be able to get a good lip swatch photograph of it. I have tried different lighting and on different days but I think it's just not going to show up well with my camera. That's probably my roundabout way of explaining why there are so many photos!
Bonheur is a glossy rich berry colour with fine sparkle. On the lips the sparkle isn't really visible until the colour fades. The Rouge Coco Shine's are quite a sheer formula but I find this shade does add a reasonable amount of colour to my lips, something that put me off trying shades like Boy. The formula has a nice slippy feel on the lips though I don't find it quite as balm like or moisturising as my Chantecaille Lip Chic. It doesn't last very long so you need to re-apply frequently.
I think that the colour appears more pink and lighter in these photos than it does in the flesh. It's a lovely bitten berry kind of colour on my lips but the pictures do give a good impression of the glossy, sheer finish.
Edit: As I was unhappy with these lip swatches, I took some more which I feel are a better representation. You can find them here.
I included this full face picture to show how it looks in the context of my face. Again, I think it's a bit darker in person.
Have you tried any of these lipsticks? I'm really interested to know how those with pigmented lips find Boy. I'm drawn to the colour but suspect it won't show up on my lips.