I'm pretty sure it's just the old photo look (plus the fact that in the current version, part of the space have been colonized by computers, which kind of ruins the mood).
Soviets/Russians seems to select the seafoam or tealish green colors as backgrounds since these colors create a calmer environment which helps when everything else is pressuring you.
The most interesting thing is public ISS telemetry page at [2]. Go to Russian version and the color scheme changes to a bluish one which they also use with some of the interiors/control panels Russians use in similar equipment.