I made Sugarveil decorations lined them on parchment paper and stored in a Ziploc bag like they said but they are turning off white to a light yellow. Are they ok to use? I plan on coloring them silver.

I have used Sugarveil several times but never had them turn yellow on me. I always put them on parchment and store in a sealed plastic container. Maybe sunlight had something to do with it. I would think the edibility of it would not be compromised.