I have stable cas9 expressing mammalian cells and predesigned crisprna+tracrna (sgrna) for my GOI. However, I would like to clone sgrna into a GFP/RFP plasmid so that I can sort out these cells after transfection. By this way I know that the transfected cells have sgrna in them. Any suggestions on how to clone any sgrna into a GFP/RFP plasmid or commercial sources please.