On the LV side I'm one of the old Red Yellow & Blue boys. Imagine my shock when some low slung non understanding bunch of half wits decided to harmonise with Europe to give us Brown Black and Grey. As usual only half a job and once you get onto the livelier side of the transformer the old colours are still in use so now instead of red to red etc we have red to brown etc.
As for the 66kV lines in India if you can see the colour you are way too close. Go with copper coloured!!!