Look like this (assuming it embeds ok)

Anyway. I want to LED the fitting.
All the ones I have found so far are either way too bright (12w x 12 will be far too much) and have only the top half of the light lit, with the bottom half dark as its where the guts are.
Ideally I guess 3-4 w would be right to replace the 25w incandescent lamps, dimmerable if higher wattage would be great, but most importantly I need the whole sphere to light up, a small bit at the bottom where it goes into the fitting dark is ok, but not 1/4 the height of it like one I saw.
Anyone seen anything in their web travels?
Bonus if its in 4000k as it is a hanging light so looks nicer with a higher temperature than a table lamp.