Alexandre and Alan,
Quite a bit of work was put into this for the B2 build. Let us know what you think. You can also download the current Etoys version and put it on your B1 machine.
However, the font for the textual representation of fonts are not modified (yet).
The way you fix is to bring up a world menu by pressing Alt-shift-w (it may take some seconds for the first time in a session), choose "appearance...", then choose "system fonts...", then choose "code font..." (third from the bottom in this menu), then wait for a while, and choose the style of font you would like, then choose the size of font, and then choose the emphasis if necessary.
-- Yoshiki