feline fanatic

I would recommend you reconsider your black thread on the colored areas. Dark thread on bright fabric has a tendency to look spidery (for lack of a better term) and every wobble, hesitation and flub will show. Only the most experienced quilters that are incredibly brave and sure of their talents would do this and many won't attempt it ever because it rarely looks great, unless it is computer generated quilting, which doesn't have hesitations, wobbles and mistakes.

Make up a test block of the colors you have used, it doesn't have to be anything fancy, just sew together the scraps in any old haphazard way and quilt on it with black thread, you will see what I am talking about immediately.

Edited to add: However the reverse is not true. Light colored thread (or a varigated multi) on dark fabric usually looks pretty good. But again, high contrast either way will show mistakes much more than a thread that blends in and you are limited that backtracking (stitching over the same line) will really show with a varigated.