You can't always believe what you are seeing on a computer. Every monitor is different and can show colors way different from what they are in the hand.
I have the X2 chartreuse, X2 green chartreuse and the X2 fluorescent green. In both of the green colors, I add just a single drop of regular old green [4 ounce batch] to the X2 green color if I want to get a stronger green in the hand. Green is a strong color by itself so a little goes a long way when trying to bring some strength to the Fluorescent and Green chartreuse, but it works wonders.