When Zach is typing texts to an unknown person, the send button is green, and his first response has a green bubble. The battery is displayed partially full and with a green battery symbol.
But in the subsequent scenes the send button is blue, the text bubbles are blue (including the first text that was originally green), and the battery icon is white and fully charged.
But in the subsequent scenes the send button is blue, the text bubbles are blue (including the first text that was originally green), and the battery icon is white and fully charged.