mass-effect-3
I'm swimming in the deep end of the Renegade pool, and I've got the red, glowing scars to prove it. I can understand that people may dislike or fear me due to my chaotic decisions, but physical discrimination crosses the line!
Does my unsavory appearance affect the dispositions or conversations I have with other characters?
In general, important people and items stand out from the background. If at any point you get lost, pressing the map button (on pc, this is V) can help find your way. Additionally, important people in friendly areas (like the Citadel) are often talking over the crowd loud enough to catch players' attention.
While in a combat zone, this will highlight a point of interest such as a quest objective.
In a friendly area, it will bring up a map with all nearby people of interest listed)
You can't. The only way to reverse this is to load an old save.
Best Answer
No, your physical appearance has no effect on available choices or actions. Someone will sleep with you even if you look like that. The game characters know its that Paragon or Renegade gushing heart what matters. Also unlike ME2, ME3 conversvation choices are dependent on the SUM of Paragon, Renegade, and reputation points.
This differs from previous Bioware games such as KOTR where your alignment (Good / Paragon vs Evil / Renegade) do affect relationships.