We have a requirement to color the bubble depends on the size. Basically, if the value is high, it will have a darker color and for a low value, a lighter color.
By borrowing some functionality from color axis, you can compute dynamic colors for the bubbles: http://jsfiddle.net/highcharts/pa9byxym/
Ajith Raveendranandhan Nair commented
Thank you very much. Appreciated for the help. Having some struggle to incorporate the same with Typescript though.