Hello,
I got the same results as you did . Though I tried something a little different on our website. I could not find the 0603 though we did have a 0606 package size. That would be the closest I can find. This is the link I pulled up for the 0606 size in the warm white: https://www.digikey.com/short/z0r8c8 . I know it is not ideal, but it is the closest I can find.