fix: Grok badge invisible in light mode (#1) — change color from #f5f5f5 to #6b7280

Author: danishashko

components/dashboard/tabs/reputation-sources-tab.tsx

@@ -138,7 +138,7 @@ const PROVIDER_COLORS: Record<Provider, string> = {
   copilot: "#7c5bbf",
   gemini: "#4285f4",
   google_ai: "#ea4335",
-  grok: "#f5f5f5",
+  grok: "#6b7280",
 };
 
 function ProviderBadge({ provider }: { provider: Provider }) {