Add more themes

[hhaio]

As the title suggests, the default dark theme is nice but it is kinda hard to distinguish the number pad from rest of the ui color

1.May be change the numbers color to different shades of dark than the rest ui color
2. Would be cool if you added other dark themes

[tepozoa]

I have been using Calctastic (not open source), read issue #6 and wanted to offer their UI design as something to look at (not embedding image here in case it breaks a copyright):

• https://calctastic.com/wordpress/wp-content/uploads/2018/03/phone_full_5.png

I also find the button contrast too hard to work with in Dark mode; not that we want to copy the above design but more of inspiration of what can be done to help use darker/lighter shades of grey to increase the visual distinction of the buttons in Dark mode.

[danger-ahead]

Thanks for the feedback. Will look into it.

[bartick]

I can try fixing the button styles for using the button easily in a dark theme.

[hhaio]

I have been using Calctastic (not open source), read issue #6 and wanted to offer their UI design as something to look at (not embedding image here in case it breaks a copyright):

• https://calctastic.com/wordpress/wp-content/uploads/2018/03/phone_full_5.png

I also find the button contrast too hard to work with in Dark mode; not that we want to copy the above design but more of inspiration of what can be done to help use darker/lighter shades of grey to increase the visual distinction of the buttons in Dark mode.

That design is perfect.