Quote 7
"Never underestimate the power of a brilliant stylist," says Peeta. (24.36)
As he used to, Peeta's able to twist his words to smooth out a situation and make everything better. He compliments Tigris and is able to pay her, in a certain sense, for helping the rebels out. The fact that the rebels need a stylist's help reinforces the parallels between the situation they're in and the ones Peeta and Katniss endured during the Games. Then, as now, they needed the battle armor that could only come from a "brilliant stylist." It's no accident that "brilliant" is the same word Katniss used to describe Cinna (1.34).
Quote 8
Caesar leans in to him a little. "I think it was clear to all of us what your plan was. To sacrifice yourself in the arena so that Katniss Everdeen and your child could survive."
"That was it. Clear and simple." (2.23-24)
Here, Peeta continues to send a message that he's an innocent figure who would "sacrifice" himself to save Katniss's life. And, whatever else might be true or disguised in his speech with Caesar – whatever else might be propaganda that he has to say – it's pretty obvious that he would sacrifice himself for Katniss, just as she would do the same for him.