diff --git a/tsconfig.json b/tsconfig.json
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -46,12 +46,13 @@
     "moduleResolution": "node"                      /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */,
     "baseUrl": "./"                                 /* Base directory to resolve non-absolute module names. */,
     "paths": {                                      /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
-      "sylvester": ["light9/web/lib/sylvester.d.ts"]
+      "sylvester": ["light9/web/lib/sylvester.d.ts"],
+      "onecolor": ["light9/web/lib/onecolor.d.ts"]
     },
     // "rootDirs": [],                              /* List of root folders whose combined content represents the structure of the project at runtime. */
     // "typeRoots": ["/my/proj/light9/light9/web/homepage"],                             /* List of folders to include type definitions from. */
     // "types": [],                                 /* Type declaration files to be included in compilation. */
-    // "allowSyntheticDefaultImports": true,        /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
+    "allowSyntheticDefaultImports": true,        /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
     "esModuleInterop": true,                        /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
     // "preserveSymlinks": true,                    /* Do not resolve the real path of symlinks. */
     // "allowUmdGlobalAccess": true,                /* Allow accessing UMD globals from modules. */