Update theme.md

diff --git a/theme.md b/theme.md
index 29164024865bf6e3c479f6571a49d2ed226ba6ca..5d37d351b7ecdf7cd3ddd3b7b485b5cb77cfc487 100644 (file)
--- a/theme.md
+++ b/theme.md
@@ -154,6 +154,7 @@ While entered Rainbow Stream:
 * `theme` and hit ENTER to see which is available.
 * `theme` + TAB twice will show themes list instantly.
 * `theme monokai` will apply `monokai` theme immediately. You can use TAB key for theme's name autocompletion.
+* `theme current_as_default` will set current theme as next time's default.
 
 ### Theme contribution
 I appreciate any contribution for themes for this app.