Widget on android phone homescreen

[Lisbeth Salander]

Hello,

I'd like to personalize the widget on the phone screen. It seems that Memento doesn't follow the theme of the colour from the Android. By default the background is always white. I've managed to change the background of each entry, but isn't a good solution, because in the same time the background of records is changing in the library. 

I can't change the colour of the font, in order to get better contrast. Have you any idea how to get a proper widget: Light font on dark background ?

Second thing is the height of the row. Is there any option to change it?