I do have trouble getting the right colour with this one. The flower opened a deep red, almost brown and gradually got bright red and very saturated. The next bud is coming up and I'll try again. Right now, it's raining on and off and it's been doing so for days.
Well after some more thinking I decided to take a break from working on my society's newsletter. It's all in french, so I can never help myself with english texts, unless I translate them and adapt them to our conditions.
Here's another attenpt. The photo has been taken in the greenhouse with natural lighting, or at least what there is of it. That's the right colour under this lighting, and it's quite close to the first pic which was taken when the flower was dripping wet from the rain.