In short, no.
- During Auto, if your Team's Robot moves an Alliance Partner's purple Pixel from an unscored position (e.g., not On the correct Spike Mark) to a Scored position (e.g., On the correct Spike Mark), it will not be scored, as it was not placed there by the Robot that started with it.
- If your Team's Robot moves an Alliance Partner's purple Pixel from a Scored to unscored position before the end of Auto, it will not score.
Some key phrases found in GM2:
- Section 4.4.2 (page 16): "A Robot may only use its own Pre-Loaded Pixels to earn Randomization Task points."
- Section 4.3 (page 13), under "Score / Scoring": "Scored at Rest: The achievement is considered Scored based on the position of the Robot or Scoring Element when the entire field has come to rest after the Period (Autonomous or Driver-Controlled) ends.
Also, see FTC Official Q&A Q231, Q243, Q46, and Q47 for reference.