HELP. my rolex is yellowing.....

[Pauss]

For those who is familiar with Cape Cod Cloth. it happens when i was cleaning my WG daytona this afternoon with Cape Cod Cloth in the basel area and the side case of watch. and after i rinse the solution off with warm soapy water and wipe it until dry, suddenly i realize that the WG surface is yellowing.
is this normal and happened often? what should i do about it? any help or suggestion? arghhhhhhhhh