You need a lot of lemon yellow, a little grass green, a little white and a little glass yellow.

First, mix grass green, glass yellow and lemon yellow, and add 5/ 10 white. Then pour in 1 ml water and mix together. If you feel that it is not fluorescent enough, you can add a little white and a little glass yellow to continue the modulation. If it is not enough, add a little grass green to the fluorescence.