vscode-winteriscoming: Instructions file for GitHub Copilot

Copilot Instructions — Winter is Coming Theme

Project Type

This is a VS Code color theme extension. There is no runtime code, no build step, and no test framework. The deliverables are JSON theme files and the package.json manifest.

Theme Editing Conventions

Color Values

• Use hex color codes in lowercase: #219fd5, not #219FD5
• Include alpha channel only when transparency is intentional: #219fd544
• Keep accent colors consistent across dark variants (#219fd5 blue, #C792EA purple, #f7ecb5 yellow)

Token Colors

• Use VS Code's tokenColors array with scope (string or array) and settings (foreground, fontStyle)
• Use TextMate scope names — reference the VS Code syntax highlighting guide
• When adding a new token rule, add it to all 6 theme files (or at minimum to both the italics and no-italics variants of the affected base theme)

Workbench Colors

• Use the VS Code theme color reference for valid property names
• Test contrast for accessibility — ensure text is readable against backgrounds

Italics vs No-Italics

• The "No Italics" variants must have zero "fontStyle": "italic" entries
• When modifying a token in a base theme, apply the same color change to the no-italics variant but do not add "fontStyle": "italic"

File Conventions

JSON

• Use 2-space indentation (consistent with VS Code defaults)
• Theme files do not have a JSON schema reference — they follow the VS Code color theme format implicitly

package.json

• contributes.themes must list every theme file with correct label, uiTheme, and path
• Bump version on every release
• Do not add runtime dependencies — this extension has none

Images

• Screenshots go in images/ as PNG files
• Use descriptive names: dark-blue-ts.png, light-js.png
• Keep image dimensions consistent for README display