is MODding subSilver.cfg good style?

[mad-manne]

Hi there,
I have read some topics here, but as I cannot search, the answer might be here although _I_ couldn't find it

One of the MODs I am writing uses soms additional icons. To be phpBB-compliant I chose to add these into the subSilver.cfg and use them like $images['my_icon'].

Now I am unsure, whether it would be good EM-style to add the MOD-instructions to add these changes to subSilver.cfg into the main MOD-file or to keep that in a seperate file, so that it could be adapted for other styles?

Thanks for your feedback,
Manfred.