diff --git a/theme/37c3/theme.json b/theme/37c3/theme.json
index 342d25cc1..182fe9087 100644
--- a/theme/37c3/theme.json
+++ b/theme/37c3/theme.json
@@ -86,11 +86,11 @@
     "main-bg-color-report": "#0f0d10",
     "hashtag-vertical-spacing3": "100px",
     "hashtag-vertical-spacing4": "150px",
-    "button-background-hover": "#0481f5",
+    "button-background-hover": "#0b1575ff",
     "button-text-hover": "#aaaaaaff",
-    "publish-button-background": "#07447c",
-    "button-background": "#6800e7",
-    "button-selected": "#b239ff",
+    "publish-button-background": "#000000ff",
+    "button-background": "#000000ff",
+    "button-selected": "#2d42ffff",
     "calendar-bg-color": "#000000ff",
     "lines-color": "#b239ff",
     "day-number": "#aaaaaaff",