With Viewpoint, you can change the colour of the indicator in...

With Viewpoint, you can change the colour of the indicator in order to make them easier to read. For example, in your charts the RSI in purple can be changed to white and it's much more visible. There is a format tab in each indicator box that allows the colour of the plot line to be changed. This doesn't fix the problem with the dark background but is an improvement on the default setting.