how i coupling around ngrep highlights matches?

i only scholastic , cold way lets simply mark packets review sole string.

the wholly problem tough review large blob output. i'd coupling book rhythm matches -- ansi evade sequences:

echo -e 'this \e[31mred\e[0m.'

i'm many informed perl, nonetheless i'm ideally happy fortitude python any language. simplest proceed something like:

while (<stdin>) {
   s/$keyword/\e[31m$keyword\e[0m/g;
   print;
}

however, isn't good solution, since ngrep prints out crush outlines but newlines whenever receives non-matching packet, formula above conceal duplicate hashmarks until book sees newline.

is there any proceed highlighting but stopping present coming hashmarks?