Dan Nicolaescu wrote:

>   > See attached.  One a LightGray background, font-lock-string-face is
>   > almost illegible by default IMO.
> 
> I see no reason to change font-lock-variable-name-face, seems readable
> enough, and its too similar to font-lock-string-face after the change.
> 

Best also bear in mind people's (especially males) color perception 
ability can vary. I fed the provided sample through the color-blindness 
display filters in GIMP (couldn't work out how to save other than screen 
capture, blargh, display filters don't work like image filters), FWIW 
(which mightn't be much, really need real color-blind people...)