If I wanted to see just orange-box, then I would do

    grep --color=always orange-box file.txt

But, I don't want to see just orange-box. I want to see orange-box and compare against other cases of box. So I would do:

    grep --color=always box file.txt | grep --color=always orange-box

Without that --color=always, other cases of box will be drowned out by the noise.

And if I wanted to write that out to a file then I would do

    grep --color=never orange-box file.txt > matches.txt

Alternatively, I'd add a filter to the file with `ansi2txt`

    grep --color=always box file.txt | grep --color=always box | ansi2txt > no-color-matches.txt