type: feature
feature:
  description: |-
    Add more dark theme color alias variables to prepare for dark theme adjustments coming in a future minor version of Blueprint:

    - `$pt-app-secondary-background-color`
    - `$pt-dark-app-secondary-background-color`
    - `$pt-app-elevated-background-color`
    - `$pt-dark-app-elevated-background-color`
  links:
  - https://github.com/palantir/blueprint/pull/6724
