Javascript and Fonts

Using NetSurf 3 #739. Wonderful to have some Javascript working,
enough at least to show Greek text in http://memiyawanzi.wordpress.com/ .
I am looking at this on a Raspberry Pi which has had no extra fonts
installed by me. I am presuming that the Greek glyphs are being
provided by !Boot.Resources.!Unicode, is that correct?
There is a small glitch: uppercase Delta and lowercase pi are rendered
as bold, which is annoying. Lowercase mu is also rendered slightly too
bold. Is there anything I can do to correct this? Are there any
tools available to do this? I do not even know which files inside
!Unicode contain the relevant data.

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Gavin Wraith (gavin@wra1th.plus.com)
Home page: http://www.wra1th.plus.com/