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docs/api/color-mode-label.md

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+---
+name: color-mode-label
+group: api
+category: formatter
+update-time: 20260520
+description: Convert a ColorMode value into its stable string label.
+key-word:
+    - color
+    - formatter
+    - label
+    - public
+---
+
+## Color-mode-label
+
+Convert `ColorMode` into its stable string label. This helper is useful for diagnostics, tests, and config inspection output that should mirror the built-in color mode names.
+
+### Interface
+
+```moonbit
+pub fn color_mode_label(mode : ColorMode) -> String {
+```
+
+#### input
+
+- `mode : ColorMode` - Color mode enum value to label.
+
+#### output
+
+- `String` - Stable label such as `never`, `auto`, or `always`.
+
+### Explanation
+
+Detailed rules explaining key parameters and behaviors
+
+- The returned strings match the built-in color mode vocabulary.
+- This helper is presentation-oriented and does not by itself enable or disable color rendering.
+- It is useful when tests or diagnostics should expose the configured color policy clearly.
+
+### How to Use
+
+Here are some specific examples provided.
+
+#### When Need A Readable Color Mode Name
+
+When config or test output should include the current color policy:
+```moonbit
+let label = color_mode_label(ColorMode::Always)
+```
+
+In this example, `label` becomes `"always"`.
+
+### Error Case
+
+e.g.:
+- There is no failure path for valid `ColorMode` values.
+
+- If code needs rendering behavior rather than display text, the enum value itself is usually more useful than the label string.
+
+### Notes
+
+1. This helper is mostly useful for readable inspection and assertions.
+
+2. It is a natural companion to `color_support_label(...)`.