Changing color in combo chart while keeping the marker bar assigned based on expression

[nurulizzaty]

Hello experts,

I have a combo chart that has color codes in the marker based on expression. The problem is that the same colors are also applied to the line, making the line hard to visualize. Can the color in the line be changed to different color instead? 

Below is the screenshot of my combo chart. 

and below is the visualization that i want it to be;

Really need your help guys. Thanks in advance!