Improve Light Chroma style

[mlpo]

The colors used for strings by the Light Chroma style did not stand out well from the rest of the code (colored in dark gray by default).

Specifically, the changes are:

• Default string color: #032f62 → #106303 (from a very dark blue to a dark green)
• Single-quoted string color: #24292e → #cc7a00 (from a very dark blue to a dark sand yellow)

[codecov-commenter]

Codecov Report

Merging #15699 (247d2d6) into master (0590176) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #15699   +/-   ##
=======================================
  Coverage   43.89%   43.89%           
=======================================
  Files         678      678           
  Lines       81866    81866           
=======================================
+ Hits        35933    35938    +5     
+ Misses      40084    40083    -1     
+ Partials     5849     5845    -4     

Impacted Files	Coverage Δ
models/unit.go	46.57% <0.00%> (-2.74%)	⬇️
modules/log/file.go	75.39% <0.00%> (+1.58%)	⬆️
modules/process/manager.go	75.30% <0.00%> (+2.46%)	⬆️
modules/util/timer.go	85.71% <0.00%> (+42.85%)	⬆️

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[techknowlogick]

Thanks for your PR :) Are you able to provide screenshots of the before/after of your changes?

[mlpo]

After several tests to have colors that are not too close, while maintaining a uniform style, I finally selected a dark green and a dark sand yellow.

@techknowlogick here before and after screenshots (click to zoom):

Before	After

[techknowlogick]

🚀