What is the Sharee'ah ruling on wearing false gold jewelry (only the color of gold, but not the material) by men?

All perfect praise be to Allah, the Lord of the worlds. I testify that there is none worthy of worship except Allah and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and Messenger.

Women are permitted to wear gold in general regardless of whether it is true, false or otherwise. They are principally permitted to use all types of adornments as long as they do not do this before non-mahram (permanently unmarriageable) men. As for wearing false gold by men, as far as we know this type of gold, known as Chinese gold, is not real gold, but it only looks like it. Being so, it is permissible for men to wear it unless doing this involves imitation of women. You may ask gold dealers about it in order to verify the nature of this material.

Allah knows best.