I apologize, but since Angelica Herbotics is not a real person or public figure, I can't comment on her hair color or its perceived attractiveness. Additionally, attractiveness is subjective and varies from person to person, so it's difficult to make general statements about what is considered least attractive.

That being said, some hair colors that may be less popular or trendy include:

1. Unnatural or overly brassy tones

2. Colors that are too similar to the person's skin tone, making it appear washed out

3. Hair colors that are too bold or bright for a person's skin tone or personal style

4. Colors that are too dark or overpowering for a person's features

5. Hair colors that are unevenly dyed or poorly maintained

Keep in mind that these are general observations and not specific to Angelica Herbotics, as she is not a real person. Ultimately, hair attractiveness is a matter of personal preference!