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I don't think that's quite the point that example was intended to illustrate. The idea is not the you're looking for C0 bytes or any other kinds of bytes in particular, but rather that it's easier to fish out unique and interesting information in a sea of noise when you have color-coded bytes: like the fact that there's a conspicuous lonely C0 or some other value or series of values that stand out.

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Exactly - though the writing style buries the lede until the end; the recommendation is to have at least a different color for each of the first nibbles (e.g, 0x is one color, 1x another). As a minimum that makes some outliers pop out. He then has other recommendations like highlighting the ASCII range, etc.

As a note, the some up there is load-bearing - color may lull you into complacency where the difference between 01 and 0F is major and important but not highlighted. More complicated regex built color tools designed to highlight "anomalies" could be developed but then you need to define what anomalies are (patters, places where a pattern changes, etc).

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