Making fretless lines darker?

[Dolando]

Hello, I was wondering how easy it is to make the white lines on an allparts neck darker, as they just look like its a normal fretless. Ideally would like to swap for an unlined one...but I did think about going the wood laminate route but its a lot of work and it can go wrong so thought I might be able to hide them a little.

Have attached a pic somyou can see what I mean.

Any help would be great.

Thanks,

Adam