Making a bionic nerf or buff a pawn's "beauty"

[Ekarus]

Is it possible? If so how? I'm talking about the invisible modifier that effects a colonist's chance for romance and such, not the "Social Chat Impact" by the way.

[BrokenValkyrie]

That was difficult to research. Secondary material feels incomplete and I couldn't find proper explanation of all the factor that goes into romance.

There two major factor in romance, current relationship and opinion. There might be more to it, but I wasn't able to find more relevant code.

Looking into the code there only one major factor you can influence for romance which is opinion. Pawns beauty modify only effects opinion It does not factor in romance directly. The code is very large and complicated you'll have to take my word for it.

In short the only way to impact romance practically and directly is through opinion. Either by making the prosthetic effect SocialImpact or by making the prosthetic improve opinion of other pawn.

[Ekarus]

Thank you for your effort, guess I'll have to use the SocialImpact then. Oh well.

[Albion]

You'll have to remember that social impact shows up in the item details description. So it won't be completely hidden.
It also affects trade prices and the success rate of interaction requests like romance or marriage proposals.
Basically social impact is the charm of the pawn and how well he can use the opinions of others.

I didn't look into the assemblies but the opinion might be more along the lines of what you want to achieve but probably way harder to code since you might have to patch assembly functions.
However I guess you'll stick to social impact.