Beastor, the original Soviet mabuta was a darker brownish-green. Our troops in Afghanistan used to turn it into a more suitable shade of light tan by washing it in bleach and letting it sit in the sun for a couple days. This shortened the lifespan of the garments obviously, but provided almost perfect camouflage in the mountainous terrain.
Since your set is a modern Ukrainian reproduction, both the fabric and the dye must be different from the original, so following the above recipe might turn your set into something very unattractive, so I would think long and hard before risking ruining the set
