The first thing is to provide more colors for easier reading. Folding, outlining and auto completing are also need syntax highlighting to analyze the output.
Specifically - why is "can be" in "156 packages can be updated" highlighted, and why is "login" in "Last login:" highlighted?
Which words are highlighted is determined by the configuration file. For example linux.lexer in "windterm-install-path/terminal/schemes/linux" defines how to highlight and linux.fold defines how to fold the output.
You can modify the configuration file to highlight any words you want to highlight.