This what I have in my files:
Hs 126 were delivered to Greece in German splinter three colours RLM 61/62/63 upper camo and with RLM 65 bottoms, with fin flash, large roundels in six positions (on wings not at the ends) and black numbering Sigma {xx}.
In Autumn 1940 all comouflages in Greece were unified to soft lines borders ones and machines were re-painted in colours close to UK Light Earth/Dk Green (which of course faded in stronh sung faster than in UK). The numbering turned to white. The bottoms were also repainted since the roundels were then smaller and on photos no signs of overpaintings. The roundels were in only four positions (not at the top of wing, at least initialy - see below) and no rudder strips.
Newly found German photos have shown that the splinter pattern existed alongside the RAF style up until the end of hostilities. These photos are from overrun Greek airfields and show airframes in both style patterns. Also, they show that the roundels were not only used under the wings and on fuselage sides but in some cases on top of wings.
Greek Hs126 with Splinter camo:
Greek Hs126 with Wavy camo: