Wanted: A4 clear yellow plastic sheet for the windows!

[Miljea]

I have a strip of LED lights to illuminate these, but there's no soft yellow. I want to put some clear yellow plastic in the windows to tone down the orange of the LED. Needs to be flexible but not cellophane!

But no idea what search terms to use on eBay!

Any ideas? Only need one A4 sheet!

Acetate?

Like this?

Acetate Sheets A4 OHP Sheet Colour Acetate Clear Film Plastic Light Filter Gel Reading Aid Thick 100 Micron Reading Aid (A4 Size - Yellow - 1 Sheet) https://www.amazon.co.uk/dp/B00Y0VB5SQ/ref=cmswwrcppapigltti301TWXPR4ENK7BXA27KE

Or plastic document wallets come in different colours?

I luffs you! Job done, thanks.