Update README.md

README.md

@@ -43,10 +43,10 @@ short_description: A unified reference architecture for agentic AI systems
 <h2 align="center">What is AISA?</h2>
 
 <p align="center" style="max-width:760px; margin:auto;">
-  AISA is an <b style="color:#2f80ed;">implementation-neutral reference architecture</b> for building
+  AISA is an <b style="color:#899dd0;">implementation-neutral reference architecture</b> for building
   agentic AI systems. It formalizes how <b>reasoning</b>, <b>execution</b>,
   <b>infrastructure</b>, <b>evaluation</b>, and <b>governance</b> interact to produce
-  <b style="color:#198754;">reliable, scalable, and auditable agent behavior</b>.
+  <b style="color:#e6d2df;">reliable, scalable, and auditable agent behavior</b>.
 </p>
 
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@@ -124,8 +124,6 @@ short_description: A unified reference architecture for agentic AI systems
 
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-<hr/>
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 <h3 align="center">Citation</h3>
 
 <pre style="text-align:center;">