Nokishita has just confirmed that Sony a7C will be available in two colors: Black and Silver. Along with Sony a7C, a new E-mount lens and a new flash named Sony HVL-F28RM will be also announced on September 15th.
From Nokishita:
Sony’s new products scheduled to start reservations next week that are currently registered at retailers in France are “α7 series body 1” “α7 series body 2” “α7 series kit 1” “α7 series kit 2” “E mount lens” ” 6 products of “flash for camera”. 1 and 2 are probably color variations. The flash seems to be HVL-F28RM.