[css] Fix active tablink text color

[JanBednarik]

Active tablinks uses module background color for texts now. That may make them barely visible:

Fixed by changing them to module text color which should be more appropriate:

[codecov]

Codecov Report

Base: 97.58% // Head: 97.57% // Decreases project coverage by -0.01% ⚠️

Coverage data is based on head (93adfa9) compared to base (186e78b).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #231      +/-   ##
==========================================
- Coverage   97.58%   97.57%   -0.02%     
==========================================
  Files          36       36              
  Lines         414      412       -2     
==========================================
- Hits          404      402       -2     
  Misses         10       10              

Flag	Coverage Δ
unittests	97.57% <ø> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
admin_interface/models.py	100.00% <0.00%> (ø)

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[fabiocaccamo]

Hi @JanBednarik
thank you for reporting the problem and for the PR.

I was not satisfied with these colors from the beginning because there is not a logic correlation between the initial color, the color on hover and the color for active state.

I need to think a little bit to what the best solution could be here...

[fabiocaccamo]

Maybe using the hover color even for the active state is the best/safest thing to do here.

[JanBednarik]

In my theme I'm using red for hover color. That would take too much attention on active tab. Maybe that module text color is not ideal, but should be more universal.

Perhaps you can create new color setting just for active tab? That would solve it for all use cases.

[fabiocaccamo]

Yes, adding a css_generic_link_active_color would solve any doubt and would also be available for possible other future cases.

[fabiocaccamo]

@mjwalter field available in 0.25.0 version.