My OneDark Pro inspired theme configuration for Altair.

README.md

Learn more about theming Altair here: https://www.xkoji.dev/blog/theming-in-altair-graphql/

TLDR - Add your theme config settings (similar to the one below) in the settings pane (switch to advanced view in settings to see the settings editor).

theme_config.json

"themeConfig": {
  "colors": {
    "primary": "#528BFF",
    "secondary": "#D7DAE0",
    "bg": "#21252B",
    "offBg": "#272C33",
    "headerBg": "#21252B",
    "border": "#31363F"
  },
  "editor": {
    "colors": {
      "keyword": "#528BFF",
      "property": "#528BFF"
    }
  }
}