im doing a wedding cake due tonight still got plenty of time.. i got some stencils and airbrushed the design gold last night. i put the cakes in the fridge and it looks like the color spread a bit. i did not do all the tiers yet. my question is why did this happen and what should i do? should i re-fondant and try again? help!

Condensation is not a friend of airbrushing, IMO. If you want it to all look uniform, I would redo.