[Docs] Change Doxygen color style

doxygen/Doxyfile

@@ -1397,19 +1397,6 @@ HTML_EXTRA_FILES       = svg/selector-multiple-momentary-switches-LED.svg \
 
 HTML_COLORSTYLE        = TOGGLE
 
-# The HTML_COLORSTYLE tag can be used to specify if the generated HTML output
-# should be rendered with a dark or light theme.
-# Possible values are: LIGHT always generate light mode output, DARK always
-# generate dark mode output, AUTO_LIGHT automatically set the mode according to
-# the user preference, use light mode if no preference is set (the default),
-# AUTO_DARK automatically set the mode according to the user preference, use
-# dark mode if no preference is set and TOGGLE allow to user to switch between
-# light and dark mode via a button.
-# The default value is: AUTO_LIGHT.
-# This tag requires that the tag GENERATE_HTML is set to YES.
-
-HTML_COLORSTYLE        = LIGHT
-
 # The HTML_COLORSTYLE_HUE tag controls the color of the HTML output. Doxygen
 # will adjust the colors in the style sheet and background images according to
 # this color. Hue is specified as an angle on a color-wheel, see