Update app.py

app.py

@@ -437,10 +437,12 @@ css = f"""
 for i in range(opt.max_palettes + 1):
     css = css + f"""
 .secondary#semantic-palette-{i} {{
+    color: white;
     background-image: linear-gradient(to right, #374151 0%, #374151 71%, {opt.colors[i]} 100%);
 }}
 
 .primary#semantic-palette-{i} {{
+    color: white;
     background-image: linear-gradient(to right, #4338ca 0%, #4338ca 71%, {opt.colors[i]} 100%);
 }}
 """