Update app.py

app.py

@@ -37,6 +37,6 @@ For a detailed description please look through our Documentation
 url = 'https://huggingface.co/spaces/ThirdEyeData/Retail-Anomaly/blob/main/README.md'
 
 st.markdown(f'''
-<a href={url}><button style="background-color:GreenYellow;">Documentation</button></a>
+<a href={url}><button style="background-color: #668F45;">Documentation</button></a>
 ''',
 unsafe_allow_html=True)