CN 22 to be white?

Example of Form CN 22 Form CN 22, Customs declaration (pictured here) is an international form used to declare the value of international mail shipments. It is mandated to be green in colour. There is now a proposal afoot to allow it to be white, so that it can be produced by personal computers without green paper. Wouldn’t it be interesting to be at the meeting of the UPU where this will be considered?