编写一个程序，可以识别给定的两个文档之间的区别，并高亮显示彼此之间的任何差异。
文档1:

Many people use their smartphone to listen to music these days.

文档2:

A lot of individuals use their mobile device to listen to music today.
您可以使用Python库difflib来比较两个文本并找到它们之间的区别。以下是一个示例程序，它将高亮显示文档之间的差异并打印它们：

```
import difflib
from termcolor import colored

text1 = """Many people use their smartphone to listen to music these days."""
text2 = """A lot of individuals use their mobile device to listen to music today."""

diff = difflib.ndiff(text1.splitlines(), text2.splitlines())
result = '
'.join([colored(line, 'red') if line.startswith('-') 
                    else colored(line, 'green') for line in diff])

print(result)
```

该程序首先使用difflib库中的ndiff函数将文本行转换为差异对象列表。然后通过逐行检查差异对象来判断其是否已添加，已删除或已修改。最后使用termcolor库中的colored函数对已更改的行进行颜色标记（绿色表示添加，红色表示删除）并将它们合并为字符串。