Changed toggle switches and text color in night mode in settings(#2187)

[cypherop]

Fixes #2187 Night mode:settings

What changes did you make and why?
Changed color for colorAccent attribute

Tested on Motorola Moto G5 plus with API level 24

[codecov-io]

Codecov Report

Merging #2195 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master   #2195   +/-   ##
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  Coverage    5.77%   5.77%           
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  Files         231     231           
  Lines       11599   11599           
  Branches     1078    1078           
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  Hits          670     670           
  Misses      10873   10873           
  Partials       56      56

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[domdomegg]

I'm not too sure about the color you've chosen - it's pretty different from the rest of the app theme. I had a more boring color in mind e.g. light grey. Alternatively if we do want a bit of colour maybe use a pale blue color?

Given this is now the new night theme accent color, could we call it that in colors.xml? Especially as it also has affect elsewhere e.g. tabs, subtitles e.g. rename toggle_switches_color to accent_color_dark

Tested 2.9.0-debug-pr-2195~dd653b6a on Galaxy Nexus (emulator) at API level 28

[domdomegg]

Also I noticed on the about page it seems like some links aren't being coloured with the correct accent color. In the sceeenshot below, notice "Github issue" is the accent color but "Rate us" is blue link color.

Depending on what the fix is it might be better to submit a different PR but maybe you could have a look into standardising that?

[domdomegg]

I was just reviewing #2098 and it looks like that PR fixes it. As it's ready to merge and was submitted earlier I'm going to close this in favor of #2098.

Apologies for advising on doing the issue