omni: update OmniStoreInstaller to fix dark bg color

Change-Id: I18dbda94b98056f16aa639c9d18b9ab8e010df83
diff --git a/prebuilt/app/OmniStore/OmniStoreInstaller.apk b/prebuilt/app/OmniStore/OmniStoreInstaller.apk
index 3b73d81..46dbe47 100644
--- a/prebuilt/app/OmniStore/OmniStoreInstaller.apk
+++ b/prebuilt/app/OmniStore/OmniStoreInstaller.apk
Binary files differ