ColoredChain is pretty similar to LISK,any reasons?

Fully different.
Lisk used DPoS.Hmm,I would rather not named it decentralized consensus.
If you interested,you can look into what's DPoS.
Whereas,ColoredChain use Native Virtual Proof of Work but without special mining equipment.
I never trust a newie who regiested olny 2 weeks ago.