This post is manually migrated from Ruuvi’s old feedback page.
The background for graphs in Ruuvi Station (iOS at least) is a picture, either a default chosen by the App or from the user’s photos.
An uneven background, especially if there are white areas, make it impossible to read parts of the graph.
Would it be possible to include a black (or other single colour) background in the defaults?
Just a suggestion: you can use the Camera function for the background, and take a very close picture of any surface of any color. This will give you a blurry background with the color of your choice, perfect for reading the text.