No - you can have a go, but you'd have to be a masterhacker. For a start the fonts are run-length encoded (6 bits count/2 bits data). Secondly in v1.01 the fonts are defined by two data blocks. One is effectively a header detailing character offsets and width/height data, the second contains the rle data.

Load primitives.bin into your favourite text editor and skip to the end of the file for some useful info.

v1.1 will see the birth of a new approach to font handling - you'll have to wait and see.