Hibiscus: Please ID this plant, thanks, 1 by chia

chia wrote:
I planted this plant from seeds given by a friend in Spain, and I was told that it was cross from colombine and other orange. However, it look different from other tropical hibiscus that:
1. All the plants look the same, I mean the same size of flower and colors. While other topical hibiscus seeds I got from AHS, bloom with different color.
2. This flower appears to be pink in morning, and change to light orange in the afternoon, why is this so?
3. Is this hibiscus rosa sinensis?
4. I have cross with other hibiscus rosa sinensis, it seem that it have high percentage of success in pollination, will the seeds produced, look the same as mother plant, no different in color?

Thanks.