refactor: Update bar and base colors for transaction visualizations in the dashboard

app_trans_new.py

@@ -237,9 +237,9 @@ def create_transcation_visualizations():
         barmode="stack",
         title="Chain Daily Activity: Transactions",
         color_discrete_map={
-            "optimism": "red",
+            "optimism": "blue",
             "ethereum": "darkgreen",
-            "base": "blue"
+            "base": "purple"
         }
     )
     fig_tx_chain.update_layout(