You can do it, I just checked! On level 80, you need only blue and cyan. 87 is yellow and white. The trick is to find the right proportion.
ah thank you x3 ; i think it was one of those situations where I've been playing a game for too long XD, it's seriously addicting XD
Thanks :)
I suspect blue light filters such as Night Shift can make it much harder. I'm adding a note about it