Set background color using VS Code theme

ci/vscode.patch

@@ -493,10 +493,10 @@ index eab8591492..26668701f7 100644
  					options.logService.error(`${logPrefix} socketFactory.connect() failed. Error:`);
 diff --git a/src/vs/server/browser/client.ts b/src/vs/server/browser/client.ts
 new file mode 100644
-index 0000000000..4042e32f74
+index 0000000000..96fbd4b0bb
 --- /dev/null
 +++ b/src/vs/server/browser/client.ts
-@@ -0,0 +1,263 @@
+@@ -0,0 +1,270 @@
 +import { Emitter } from 'vs/base/common/event';
 +import { URI } from 'vs/base/common/uri';
 +import { localize } from 'vs/nls';
@@ -515,6 +515,7 @@ index 0000000000..4042e32f74
 +import { LocalizationsService } from 'vs/workbench/services/localizations/electron-browser/localizationsService';
 +import { IRemoteAgentService } from 'vs/workbench/services/remote/common/remoteAgentService';
 +import { Options } from 'vs/server/ipc.d';
++import { IStorageService, StorageScope } from 'vs/platform/storage/common/storage';
 +
 +class TelemetryService extends TelemetryChannelClient {
 +	public constructor(
@@ -725,6 +726,12 @@ index 0000000000..4042e32f74
 +	};
 +
 +	updateLoop();
++
++	// This will be used to set the background color while VS Code loads.
++	const theme = (services.get(IStorageService) as IStorageService).get("colorThemeData", StorageScope.GLOBAL);
++	if (theme) {
++		localStorage.setItem("colorThemeData", theme);
++	}
 +};
 +
 +export interface Query {

src/browser/pages/vscode.html

@@ -100,4 +100,11 @@
   <script>
     require(["vs/code/browser/workbench/workbench"], function() {})
   </script>
+  <script>
+    try {
+      document.body.style.background = JSON.parse(localStorage.getItem("colorThemeData")).colorMap["editor.background"]
+    } catch (error) {
+      // Oh well.
+    }
+  </script>
 </html>