lots2do

Hi all,
Bear with me, I'm going to try to post a few pictures for the first time.
Anyway, I've finished this little quilt top and have only quilted one pass so far. I am really not sure about my gray thread. I kind of want to switch to coral in this section and switch back to gray where the coral fabric isn't. Probably as clear as mud...
So, what do you think? Should I just stick with all gray or quilt the gray and go back and quilt with coral thread? Is that a weird idea? Does anyone ever do that?
I should add that this is a practice quilt for me and that it was not made with anyone in mind. Certainly not a baby quilt for a grandchild in the future...
Thanks for your thoughts,
lots2do