+* `CAL`: colors for calendar's output:
+ * `days`: color for days in current month.
+ * `today`: color for today.
+* `GROUP`: colors for twitter list output:
+ * `name`: color for twitter list's name.
+ * `member`: color member count.
+ * `subscriber`: color subscriber count.
+ * `mode`: color twitter list's mode.
+ * `description`: color twitter list's description.
+ * `clock`: color twitter list's created time.
+
+### Theme usage
+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.