I have an art piece of everyone’s L’Manberg uniforms that Tumblr won’t let me link, but the general gist is that anyone who joined post revolution got to choose the shade of their coat, and got a light blue sash instead of a red one. They also don’t have the lines on the boots.
Elections
She dyed parts of her hair orange to match Fundy for coconut2020, and a lot of her outfit was styled to reflect to the people that she was loyal to L’Manberg - keeping the same collar shape as her uniform, wearing the same turtleneck, wearing the shoulder pads
Manberg
She dyed her hair! Niki tied the sash from her L’Manberg uniform around her leg as a sort of rebellious act against JSchlatt (which she did a lot of), showing she was loyal to Wilbur’s nation rather than his. She also tied the hairtie around her wrist. Her sweater is the mental-breakdown shade of pink that she dyed her hair later, showing that this was the start of her mental decline and that this was a massive period of loneliness.
Pogtopia
She cut her hair and put it up into pigtails so that it was out of the way while she was in the ravine. I headcanon that this was when she got Wilbur’s cloak and that he gave it to her once she joined. Also, despite not participating in a war yet she has a scar on her leg from being chased out of Manberg and murdered by Ponk on the day of Tubbo’s execution, which is what led to her joining Pogtopia. The L’Manberg hairtie is still on her wrist but the ones in her hair are the mental breakdown colour, however there is less of that pink on this design than the Manberg one as joining Pogtopia reunited her with many of her friends, so she didn’t feel as alone even if she was still scared.
Breakdown
This design is for the entirety of New L’Manberg, Doomsday, and the rocket duo arc, up until the point where she stopped trying to kill Tommy and focused more on her secret city (where she locked herself up due to sleepwalking and night terrors). This arc lasted a long time and goes acrosss multiple eras her appearance remained how it did from NLM because she had no motivation to change anything, despite usually taking pride in aspects of her appearance such as her hair (which had grown out slightly between Pogtopia and now). There is no a single reference to L’Manberg in this outfit but she does still have Wilbur’s cloak.
Healing arc
Niki’s healing began after joining the syndicate but I think the appearance change would not come until at least a few months after joining as she was still trying to find her sense of self again. When she did, she went back to her blonde hair but dyed half brown, like a reference to Ranboo and Puffy. She continues to wear Wilbur’s cloak but is now in a much classier fit, having spent too much time with Techno (who definitely gave her the gold). The L’Manberg hairtie is back, this time with a braid, because I think Syndicate braids is an even cooler concept than sbi braids