Draw line using a gradient color

Hello,

I am using draw2d to draw some graphics using go and it's going great. Thank you for the library!
I have a usecase where I would need the line I am drawing to use a gradient color instead of a solid color. As an example the line could start green and end red.
Can this be done? I've been looking around for a way to achieve this but so far I have come up short.
Thank you in advance for any answer.