Challenge 2: Unnamed Color Shades Creeping In Despite a Published Library — Solution Walkthrough

The answer:

Per this chapter's own warning box, this is exactly the "style drift"
problem it describes — having a published color and text style library
doesn't automatically prevent someone from picking an unnamed, one-off
color or manually setting properties instead of reaching for the
established style. Over several months, small individual shortcuts
like this can accumulate across a team without anyone deliberately
deciding to break consistency.

Why this isn't a failure of the library itself:

The library and its styles work exactly as designed for anyone who
actually uses them. The drift comes from designers occasionally
bypassing the style — perhaps picking a color slightly off from memory,
or adjusting a value slightly for one specific screen — not from any
technical limitation in how styles or propagation actually work.

What this reveals about design systems generally:

Per this chapter's own material, the tools enable consistency, but
actually maintaining it requires ongoing discipline across the whole
team — regularly checking for and correcting drifted, unnamed values is
part of what keeps a design system genuinely consistent over time,
not a one-time setup that then maintains itself automatically.

WHY THIS WORKS AS AN ANSWER
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This exercise checks that gradual style drift is correctly traced back
to inconsistent usage over time, not a shortcoming in the design
system's own tooling or propagation mechanism.