Add color variant logos. Update OpenGraph logo to blue.

content/en/_index.md

@@ -1,6 +1,6 @@
 ---
 title: "MemMachine - The Open-Source Memory Layer for AI Agents"
-date: 2024-09-09
+date: 2025-09-09
 description: "MemMachine is the open-source memory layer for advanced AI agents, enabling them to learn, remember, and adapt. Build personalized, context-aware applications that store long-term conversational memory and user preferences."
 canonical: "https://memmachine.ai/"
 
@@ -10,15 +10,15 @@ og_description: "MemMachine is the open-source memory layer for advanced AI agen
 og_url: "https://memmachine.ai/"
 og_type: "website"
 og_site_name: "MemMachine"
-og_image: "https://memmachine.ai/img/logo.png"
+og_image: "https://memmachine.ai/img/MemMachine_logo-horizintal-blue.png"
 og_image_alt: "MemMachine AI Logo"
 
 # Twitter Card Metadata
 twitter_card: "summary_large_image"
 twitter_site: "@memmachineai"
 # twitter_title: "MemMachine - Open-Source Memory for AI"
 twitter_description: "Build advanced, personalized AI agents that remember. MemMachine is the open-source memory layer that enables long-term memory and learning for any LLM."
-twitter_image: "https://memmachine.ai/img/logo.png"
+twitter_image: "https://memmachine.ai/img/MemMachine_logo-horizintal-blue.png"
 twitter_image_alt: "MemMachine AI Logo"
 
 # Structured Data (JSON-LD)