The answer will be YES. The yellow color of gold plated jewelry can fade through wear. The gold plating is very thin, so the jewelry can be rubbed off easily if it is worn for some certain environments, such as washing dishes, working around chemicals, wearing gloves and so on.
From Viennois-online, the jewelry are plated with thicker gold coating of about 0.5 micro, higher than the jewelry from other gold plated manufacturers, so they can remain bright even in humid enviroment. In a general, they will not fade after 1 year.