Thank you! For the coverstitch machine I just use the closest colors to the fabric since they show on the outside. For the serger I usually just keep grays or whites in the 3 right spots and then since the left thread spool sometimes shows I will sometimes change that to a similar thread color to my fabric. I pretty much only change the left serger thread. I change the coverstitch for eacvh project. I stock up on grays and whites and if I know I have a specific color project coming up I'll buy lots of that one
