Dude, this isn't really a problem. It's not that your Evolution electronics are bad. This happens simply because in the design of this vape mod, Dovpo decided to put a pretty dark glass to protect the DNA 250C screen, that's all. I have this mod and it's like that.
HOWEVER, IN THE LAST 250C OF THE VAPE (THERION II), THIS DOES NOT HAPPEN, BECAUSE IT SIMPLY DOES NOT HAVE A PROTECTIVE SCREEN..AT THE BEGINNING IT SHOCKED ME TOO, SINCE THE FIRST ONE I PURCHASED WAS THE LVE AND IT HAS A CLEAR AND SHARP SCREEN, WHICH DOES NOT HAPPEN WITH THE DOVPO ODIN V.2.