I have a wedding cake in 3 weeks. I am making the topper out of fondant. I want to make the fondant, color it all, and make the topper ahead of time. Since I don't want to worry about trying to match the color of the topper with the rest of the cake I am making the batches big enough to do both. My question is...If I make the topper 1-2 weeks ahead how do I prevent it from fading so the color still matches the cake on the day of the wedding? I am working a lot before the wedding so I don't want to leave it to a day or two before (like I usually do).

No suggestions?

Keep the item stored in a dark, cool place......no light at all!
Also, I made some violet colored RI flowers a few weeks ago, and they came out a bit darker than I wanted, so I put them in the light for 3 days.......but they never faded! I used AmericaColor (?), so I know that his tbrand/color holds up well! Let the customer know it will fade if the cake is placed in front of a window.......cover your backside here.