[LL120 fans different colours]

Hello, a while ago I bought 4 LL120 fans and a h100i RGB Platinum SE cooler (which comes with 2 more LL120 fans) however i just noticed the colours from the fans on the cooler looks very different, is this normal? cause it really bothers me now i noticed :/

[H100i quiet mode gurgling sound]

Thanks, so it does sound like it's an air bubble that's the problem? If it isn't gone after letting it run for a few days i should try to return it?

[H100i quiet mode gurgling sound]

Hello, about two days ago i received my H100i RGB platinum SE however when I put it on quiet mode it seems to make some sort of gurgling sound, anyone knows how to fix it?

 

https://imgur.com/a/wJQzHfF This is what it sounds like