I am a believer.  Just saying you could mine a testnet4 block and work with coloured coins and not have to wait that long.  Coloured coins are great because they themselves dont know which net they live on.  Anyway, thanks for helping to secure the chain(s)! 

 I only have one running now, trying to find an issue for which I don't want to interrupt it.

When that's done I might point it at testnet4, just to see what happens. 

 cool sparrow wallet supports it, and ive found it to be an excellent tool so far

https://sparrowwallet.com/