Upload a document after CO contact processing

Hi I was contacted by CO on September 7 2018. The requirment was only one document - Functional prroof for spouse for which I have given letter from University saying the education was imparted in English. Now, today is Novemebr 21, and Im expecting a grant/contact almost anytime now. Hoewver, I just relaized that coupe of documents i had uploaded for Spouse is not original color scanned. They are scan of the copies. So can I upload these color scanned documents now? Or will it impact processing considering its almost 3 months since I had been contacted by CO. Note: The CO never asked for these docs in color originals in the first contact he made. But I want to avoid further delay of 3 months in case they as for it this time. SO wanted to upload beforehand.