I flagged my own posts as off-topic there, so hoping for a kind moderator to move them over.
I’ll have to sleep on this, so won’t comment much more tonight I think. I’d be inclined with having the micro-coins be not directly connected (colouring) to safecoin. It might produce more volatility, and network overhead; but also as @Hoppy pointed out; if the coins are confusing (even for the developers, as it might be with coloring), then the lack of usability makes it all useless.