How do I get the yellow stains out of my Invisalign aligners? (Photo)

How can I clean my Invisalign aligners? I ate a spoonfull of curry forgetting that I had my aligners in it has stained them quiet abit, I didn't realise it would stain this much as it was only a spoonfull. I do get a new aligners in six days but I am worried as now my teeth look yellow for this period of time. Anything I can use to move the dis coloration without damaging my aligners?