Weather App - Primary and Secondary Font Colour

The current Weather app allows for the choice of primary and secondary colour options, yet it doesn't allow for primary and secondary text colours. Please add this functionality so we can set contrasting font colours to the chosen background colour. I wish to set the primary colour as our company colour (navy blue) with white text, and set the secondary colour as white with black text, not too disimilar to the 'Light' colur scheme, but I can't.