changed clear button hover color

theme.py

@@ -28,6 +28,8 @@ class CustomTheme(Soft):
             button_primary_text_color=white,
             button_secondary_background_fill=grau_light,
             button_secondary_background_fill_dark=grau,
+            button_secondary_background_fill_hover=red,
+            button_secondary_background_fill_dark_hover=red,
             button_secondary_text_color=white,
             button_secondary_border_color=white,
             block_background_fill=grau,