Improve visibility of selected rows in resourcetype listing.

[chicco785]

Is your feature request related to a problem? Please describe.

Selected color may not be so visible depending on screens.

Describe the solution you'd like
A clear and concise description of what you want to happen.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

[c0c0n3]

note: implemented dynamic text grayscale colour depending on user selection.
this should be good enough for now.

[Valecant]

@c0c0n3