Rebels - S3E16 - "Legacy of Mandalore"

The colors in "Legacy of Mandalore" hold some significance.  The episode starts with Sabine returning to her family home on Krownest where she doesn't receive a warm welcome.  Her ship is shot down, and her mother's first words upon seeing her are, "So, it's true, then.  Put her in a cell; she'll be held for trial."

The environment of Krownest is predominately black and white:

Consequently, Sabine's brightly colored hair and armor really stand out:

This contrast mirrors the characters' relationship.  Sabine doesn't fit in with the palette of Krownest in the same way that she's not fully accepted by her family.

Rebels - S3E11 - "Visions and Voices"

A trivial detail in "Visions and Voices" matches a more significant element in the story.

About five minutes into the episode, after Ezra sees visions of Maul, Kanan has Sabine put a tracking device on Ezra's wrist comm:

Later, after Maul appears on Atollon, makes a deal with Ezra in which each will share the information he saw when they joined the holocrons in "The Holocrons of Fate," and then leaves with him, Kanan and Sabine are able to follow Ezra using this signal.

On Dathomir, Maul tells Ezra that "the only way to access the knowledge we seek is to merge our minds again."  He explains that "I have studied the ways of the Nightsisters and found a spell that suits our needs... to initiate the merge, we, we must each drink this potion."  When Maul drinks, his own wrist comm is plainly visible, and it has the same basic design as Ezra's:

Since they opened the holocrons together in "The Holocrons of Fate," Ezra's and Maul's minds have been linked to a certain degree, and in a small way, the similar design of their wrist comms visually indicates this connection between them.

Rebels - S2E21 - "Twilight of the Apprentice - Part I"

When Ezra first encounters Maul in "Twilight of the Apprentice - Part I," he definitely doesn't trust him.  He draws his lightsaber on him and tells him to "Stay back!"  After Maul says, "You came for the same reason I did, years ago:  you seek knowledge" and explains that he knows how to get into the Sith temple, Ezra agrees to go with him but insists that Maul walk in front of him, apparently so that Ezra can keep an eye on him.

Ezra's feelings toward Maul begin to change after Maul says, "The Sith took everything from me, ripped me from my mother's arms, murdered my brother, used me as a weapon, and then cast me aside, abandoned me."  Ezra replies, "I know how you feel.  The Empire, it took away my home and my mother and my father."  As they approach the door to the temple, Maul claims that the knowledge inside is the key to destroying the Sith, and when he says that he'll share this knowledge with Ezra, Ezra starts walking up the steps in front of Maul:

Ezra keeps Maul in front of him when he first meets him, but after Maul entices him with the knowledge inside the Sith temple, Ezra goes before him.  This change visually indicates that there's a more or less definite point where Ezra starts to trust Maul.