Hi gayayang,
We recommended not to change the code because if you change the code then while updating to our new version all your customisation code will be lost. So better make child theme and first unhook the functions and the edit the code.
http://codex.wordpress.org/Child_Themes
hot can i remove footer default text??
->> Theme by: Theme Horse | Powered by: WordPress
==> you are not able to change it. It needs code customization. This feature is only available in Pro version.
To change the menu color too we don’t have this feature in free version. Color options are availble only in Pro version.
Thank you!