Icons on dark theme

[thakyZ]

Feature Description

Could you make the possibility to make the icons appear lighter than the dark UI? It is kind of hard for me to tell what the icons depict, as it is just a black icon on a black background. Maybe even invert the icons color depending on which theme you are using, if you plan to implement other themes in the future (i.e. White icons for dark theme, vice versa). Or better yet, allow for user customization for icon color.