Nah, I'm pretty sure the Perseids are all old enough and choose their own mates.
However, blue and orange morality typically leads to grave misunderstandings and wars due to each side assuming they are playing by the same rules and the other side keeps being a pain in the rear and breaking them. But it can definitely exist in non sci fi settings as well.
I don't mind the rubber ridges as the appearance is less important to me and sometimes I like those little rubber ridges. I don't like the original Klingons so much but I like the TNG Klingons just fine and I think the nose ridges on Bajorans are adorable.
But my main focus with sci fi is almost always the people, the social situation, the way that the people interact in other ways such as trade or governemental interactions. I like it when species take certain issues and more or less isolate them so that you can examine the impact that those particular sets of issues have. For instance, klingons and courtship. During courtship the normally very aggressive klingon male actually softens up in certain ways to court a female, often risking life and limb to recite poetry to her while she is hurling very large/heavy/hurtful things at him. But at the same time, if a klingon male just walks up to a klingon woman and pops her dead in the jaw, that could signal the begining of courtship. Both sexes find aggressive/assertive behavoir attractive. Now imagine how all of that would play out in a human context. Also they seem to be fond of poetry and opera. They really like Shakespeare, go figure.
Or in Andromeda, the Than (species) are sapient bugs. That being said they have a hive like societal structure, there are castes which are determined at birth (by color which mean Than are color coded for your convenience

), and they have ridiculously large families. Mating is communal I guess you could say since many adults of the necessary sexes will come together as a breeding group and everything gets mixed up in a common pit so that it is usually unclear who the exact parents are. However, it doesn't matter as all the children are raised by all the adults who are all considered equal parents and there are easily like 10,000 siblings or something ridiculous like that to a batch who are all considered full siblings. Not to mention the complex family connections once you get into siblings from other breeding sessions, extended family, and so on. This is why the Than say Humans pursue love so desperately. It's because we are so lonely due to having so few people in our lives.

Now if that all isn't freaky enough for you, wrap your mind around this one. There are Humans that live in Than contexts and the human proceed to organize themselves in Than like social structures as well... and I always got the impression that they also managed to more or less imitate the breeding system... I do not want to contemplate how they went about that.
Overall, I like to see how people use fictional settings to organize people.
