wrap_content

<TextView
	android:text="wait, today's your birthday?"
	android:background="@android:color/darker_gray"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content" />

font size

<TextView
	android:text="wait, today's your birthday?"
	android:background="@android:color/darker_gray"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:textSize="56sp" />

appearance

<TextView
	android:text="wait, today's your birthday?"
	android:background="@android:color/darker_gray"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:textAppearance="?android:textAppearanceSmall" />

google design spec style color
https://material.io/guidelines/style/color.html

text color and background color

<TextView
	android:text="wait, today's your birthday?"
	android:background="#ECEFF1"
	android:textColor="#616161"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:textAppearance="?android:textAppearanceSmall" />