All four Reaper Bones Stone Giants, but with some modifications:
Replaced the club wielded by the guard with the one from the smaller, older giant
Gave that giant a home-made hammer and a rock to throw.
For colours I chose a base of old Citadel Adeptus Battlegrey, brightened with white for highlights. The cloth colours are all greyish hues rather than natural stone colours because I thought that might be too dull. Very happy with the purple cloth, which is done with the Reaper Dark Elf Skin triad. I tried to do decorations in bluish green jade (though if you think it's more like patina on old bronze, that's fine too) and blue crystals and gems as a change from my usual choice of red. Pleased with the "sparkle" on some of those crystals.
Stone weapons are more traditional for AD&D stone giants but I thought stone hammers looked odd so went with greyish metal. It suits the overall pallete, I hope.
These models are part of a stupidly ambitious diorama which you can see over here:
Stone Giant Tribe