Update app.py

app.py

@@ -28,6 +28,98 @@ def classify_audio(filepath):
 # Streamlit app layout
 st.title("Heartbeat Sound Classification")
 
+# Theme selection
+theme = st.sidebar.selectbox(
+    "Select Theme",
+    ["Light Green", "Light Blue", "Dark Green", "Dark Blue"]
+)
+
+# Add custom CSS for styling based on the selected theme
+if theme == "Light Green":
+    st.markdown(
+        """
+        <style>
+        body, .stApp {
+            background-color: #e8f5e9; /* Light green background */
+        }
+        .stApp {
+            color: #004d40; /* Dark green text */
+        }
+        .stButton > button, .stFileUpload > div {
+            background-color: #004d40; /* Dark green button and file uploader background */
+            color: white; /* White text */
+        }
+        .stButton > button:hover, .stFileUpload > div:hover {
+            background-color: #00332c; /* Darker green on hover */
+        }
+        </style>
+        """,
+        unsafe_allow_html=True
+    )
+elif theme == "Light Blue":
+    st.markdown(
+        """
+        <style>
+        body, .stApp {
+            background-color: #e0f7fa; /* Light blue background */
+        }
+        .stApp {
+            color: #006064; /* Dark blue text */
+        }
+        .stButton > button, .stFileUpload > div {
+            background-color: #006064; /* Dark blue button and file uploader background */
+            color: white; /* White text */
+        }
+        .stButton > button:hover, .stFileUpload > div:hover {
+            background-color: #004d40; /* Darker blue on hover */
+        }
+        </style>
+        """,
+        unsafe_allow_html=True
+    )
+elif theme == "Dark Green":
+    st.markdown(
+        """
+        <style>
+        body, .stApp {
+            background-color: #1b5e20; /* Dark green background */
+        }
+        .stApp {
+            color: #a5d6a7; /* Light green text */
+        }
+        .stButton > button, .stFileUpload > div {
+            background-color: #004d40; /* Dark green button and file uploader background */
+            color: white; /* White text */
+        }
+        .stButton > button:hover, .stFileUpload > div:hover {
+            background-color: #00332c; /* Darker green on hover */
+        }
+        </style>
+        """,
+        unsafe_allow_html=True
+    )
+elif theme == "Dark Blue":
+    st.markdown(
+        """
+        <style>
+        body, .stApp {
+            background-color: #0d47a1; /* Dark blue background */
+        }
+        .stApp {
+            color: #bbdefb; /* Light blue text */
+        }
+        .stButton > button, .stFileUpload > div {
+            background-color: #006064; /* Dark blue button and file uploader background */
+            color: white; /* White text */
+        }
+        .stButton > button:hover, .stFileUpload > div:hover {
+            background-color: #004d40; /* Darker blue on hover */
+        }
+        </style>
+        """,
+        unsafe_allow_html=True
+    )
+
 # File uploader for audio files
 uploaded_file = st.file_uploader("Upload an audio file", type=["wav", "mp3"])