---
title: "DroppyKitThemeResolution, DroppyKit"
description: "Host-installed theme hooks."
canonical: "https://getdroppy.app/docs/droppykit/api/droppy-kit-theme-resolution"
last-updated: "2026-09-09"
---

# DroppyKitThemeResolution

Host-installed theme hooks.

`enum DroppyKitThemeResolution`

[`selectionBlueAuto`](https://getdroppy.app/docs/droppykit/api/adaptive-colors#selection-blue-auto) promised "inside Droppy this is the user's chosen highlight color" from day one, but nothing delivered it: the token always read the system accent, so a droplet's selected segment rendered accent-blue beside native rows using the host's neutral default highlight. This bridge is the delivery mechanism.

Same shape and same reasoning as [`DroppyKitHostBridge`](https://getdroppy.app/docs/droppykit/api/droppy-kit-host-bridge): droplets run in-process, so the provider has no public setter and the first installation wins: a droplet loaded after launch cannot repoint the host's theme. Reads are lock-guarded, not `@MainActor`, because color tokens are read from off-main layout code too (mirrors the host's own `ThemeSelectionCache`).

## Cases

### DroppyKitThemeResolution.standalone

`case standalone`

Standalone previews and harnesses intentionally use the system accent. This is a distinct runtime mode, not a missing-host substitution.

### DroppyKitThemeResolution.hosted

`case hosted`

Droppy installed a provider before any external product activated.