How add a new pallete to project

[PetroSuch]

Hi, thanks for you plugin
I have a question, how i can add a custom palette to my project ?
I found kendo-palettes.scss file, and i tried to add my custom style, but i failed.

https://stackoverflow.com/questions/41440998/how-can-i-use-custom-theme-palettes-in-angular
i found an example about Angular Material theme, and there i see how add palette, maybe something same is here, @nativescript/theme ?

[PetroSuch]

I have created a pull request
#292
It helps you to add you custom palettes, in your project

[PetroSuch]

@NathanaelA Could you please help me, with my pull request ?
I have got error with Travis CI, but i didn't edit any files except only one kendo-palettes.scss

eslint .
TypeError: Cannot read property 'range' of null
Occurred while linting /home/travis/build/NativeScript/theme/app/pages/themes.js:63

but i did not change something in the file themes.js