Limited support
This feature is only present in Portal 2: Community Edition and Portal: Revolution.

steaminput_default_glyphstyle

🟦 Executable on Client

steaminput_default_glyphstyle <value>

Fallback values for unspecified style in steam input Glyphs. 0: Knockout, 1: Light, 2: Dark

Note:

The value is saved and will be restored on next startup.