Many writing difficulties stem from working memory issues. (You have to remember sequence, ideas, punctuation, spelling, etc.) The Rainbow Strategy seeks to isolate skills and asks a student to first write, then go back and read their writing checking for punctuation, then look back again looking at capitalization, then spelling, etc. Students have said to me that this takes too long and I tell them that if they want to be better at writing it is worth it to train their brain to go through the rainbow. I tell them that over time, they will be able to combine the colors of the rainbow (that is what good writers do, they combine all the elements of writing in their working memory).