FVWM: mozilla vs. firefox style settings

[Karl Berry]

I'd like to have different IconFont settings for mozilla and firefox.
Is it possible?  What I tried was this:

Style "*ozilla*" IconFont *-times-bold-i-normal-*-14
Style "*irefox*" IconFont *-times-bold-r-normal-*-14

But both come out in bold roman.  I am not sure if there's any way to
distinguish them in the world of X resource names.

Thanks,
Karl