After collecting a shelf of unpopular pieces, I debated tossing them or re-glazing... See my results below:
When I originally glazed the bowl on the left, I was hoping for the light blue on the smooth bowl on the right. After firing to cone 5, the bowl came out green. I decided to fire it to Cone 6 with no additional glaze and it came out dark blue!
So basically re-glaze DOES work a majority of the time! I am really happy with most of my results. Let me know what you think!