use blue/purple theme

folding_studio_demo/app.py

@@ -13,6 +13,7 @@ from folding_studio_demo.correlate import (
     make_correlation_plot,
 )
 from folding_studio_demo.predict import predict, predict_comparison
+from folding_studio_demo.config import BLUE, PURPLE
 
 logger = logging.getLogger(__name__)