So, before going further please make sure that you have Successfully rooted your Canvas 4 and install CWM recovery, if you don’t then follow the guide for rooting and installing CWM from below link :-
Rooting and Installing CWM Recovery in Micromax Canvas 4 A210
List of Best Canvas 4 Roms :- Just click on any Rom Name to visit its Thread on XDA Forums I, will update this post with more Roms, so keep visiting and please do comment if you know any other Rom.