Silver clouds does indeed mean this is a v1 Just Friends. Per Whimsical’s help page on the RUN jack issue:
NB! This only affects the first edition of modules. Look at the rear pcb-landscape on the module. If the clouds are gold, read no further, everything is cool! If they’re silver, look on the RUN jack side of the module - if you see a little emoji sticker on the jack, it’s been upgraded already, so again - no need to read on!
If you find that your JF doesn’t seem to have the RUN jack fix, get in touch with Whimsical directly – they’re great people!
RUN modes like Volley and Spill are not version-specific. They’ve been available since v1, but subsequent firmware updates have enhanced them.