Setting font color

[dozed]

This is how preview-dvisgm currently renders latex math:

How can I change the font color? Changing "Preview Reference Face" does not seem to have an effect.

[dozed]

Some findings: it seems the SVG overlay inherits the foreground color of the first character.

Example:

This can be fixed by setting a :foreground your-color attribute on the overlay:

(overlay-put ov
	     'display
	     (list 'image
		   :type imagetype
		   :text text
		   :file image
		   :ascent 'center
		   :pointer 'hand
		   :foreground "#bbc2cf"
		   :scale 0.33))))

This results in all fragments having the same foreground color: