Black selection color when using black text color and light background

[Kzinux]

Wezterm on archlinux, impala 0.2.3.
The selection color made the text unreadable.

[pythops]

@Kzinux
can you try #20 PR

[Kzinux]

Thank you for your work.
My first time try to build rust code, the '#20 PR' fix the selection color.
Below is the newly build impala bin.

[pythops]

Great !
I will merge it then and might do a release next week

[pythops]

@Kzinux I have just released a new version with your changes. enjoy :)