WOW, that is just beautiful!

Don't know about quilting but that is one gorgeous quilt!!!!

Gorgeous!!! Navy?? Dark Purple?? Actually, I am just quilting a OBW and used metallic gold in a meander.

Personally I would do it in variegated green, BTW wonderful job on the quilt top....

Love the quilt top. Like those neon tropical colors. Quilting thread depends on how much you want it to show up. I don't quilt all that great, so I tend to use a color that will blend and not be seen as well. :D

As a longarmer I would tell you two things... if you want more design in the black aria then it should be quilted with green thread. That way the design will show up in the black and you will see what the quilt pattern is. However if you don't want more design then it should be quilted in the black. That way what ever shows (if at all) will only show in the green fabric and being that they are busy print, they wont show that much. There is my two cents worth.
Rose

I would probably pick out one of the bright colors that was my favorite. That way it adds additional pop to the solid sections.

love the fabric you used, it's beautiful.

Variegated - love your quilt -makes me want to go to the tropics.

I would use variegated thread....