Hi @JSGauthier ,
I’m very much in the same boat. One place to start is to go to the folder where you downloaded Processing, go within the lib folder, open theme.txt and look for editor.bgcolor. The text color should be below it. For reference, I copied my personal theme below. It still needs a lot of work.
You’d need to edit the image files that are scattered through-out to get rid of all the bright blues. I had to change the start up splash image (about-1x.png and about-2x.png). I also manually set
welcome.four.beta.show = false
welcome.four.beta.seen = true
in defaults.txt and in my preferences (I did both just for good measure).
I’ve not had time to review all the changes made about themes, so there may be more settings and files you have to dig around and change.
# STATUS
# Status messages (1 file added to sketch, errors, etc)
status.notice.fgcolor = #161e3f
status.notice.bgcolor = #7987a0
status.error.fgcolor = #ffffff
status.error.bgcolor = #e10c2f
status.warning.bgcolor = #fed456
status.warning.fgcolor = #764a00
status.url.fgcolor = #cccccc
status.font = processing.sans,plain,13
# For the clipboard icon, needs to be a little larger on macOS
status.emoji.font = Dialog,plain,22
status.emoji.font.macosx = Dialog,plain,22
# HEADER TABS
# Settings for the tab area at the top.
header.text.font = processing.sans,plain,14
header.text.selected.color = #fff7d5
header.text.unselected.color = #fff7d5
header.tab.arrow.color = #007fff
header.gradient.top = #131313
header.gradient.bottom = #131313
header.tab.selected.color = #232323
header.tab.unselected.color = #131313
header.tab.modified.color = #007fff
# FOOTER TABS
footer.text.font = processing.sans,plain,12
footer.text.selected.color = #fff7d5
footer.text.unselected.color = #fff7d5
footer.tab.arrow.color = #007fff
footer.gradient.top = #131313
footer.gradient.bottom = #131313
footer.tab.selected.color = #232323
footer.tab.unselected.color = #131313
footer.updates.color = #007fff
# CONSOLE
# The font is handled by preferences, so its size/etc are modifiable.
console.color = #131313
console.output.color = #fff7d5
console.error.color = #e10c2f
# TOOLBAR BUTTONS
buttons.bgcolor = #131313
# for the debug and mode buttons
#reversed.gradient.top = #131313
#reversed.gradient.bottom = #131313
## size of divider between editing area and the console
#divider.size = 0
## the larger divider on windows is ugly with the little arrows
## this makes it large enough to see (mouse changes) and use,
## but keeps it from being annoyingly obtrusive
#divider.size.windows = 2
divider.height = 9
divider.color = #131313
divider.dot.diameter = 3
divider.dot.color = #505050
# TOOLBAR BUTTON TEXT
toolbar.rollover.font = processing.sans,plain,12
toolbar.rollover.color = #fff7d5
toolbar.gradient.top = #131313
toolbar.gradient.bottom = #131313
# MODE SELECTOR
#mode.title.font = processing.sans,plain,15
mode.title.font = processing.sans,plain,12
mode.title.color = #fff7d5
# outline color of the mode button
#mode.button.color = #fff7d5
#mode.button.gap = 13
#mode.arrow.width
#mode.background.color = #3D5362
# stolen from gradient bottom
mode.background.color = #131313
mode.outline.color = #fff7d5
# EDITOR - DETAILS
# foreground and background colors
editor.fgcolor = #fff7d5
editor.bgcolor = #131313
editor.gradient.top = #131313
editor.gradient.bottom = #131313
# highlight for the current line
editor.linehighlight.color=#232323
editor.linehighlight=true
editor.caret.color = #00afff
editor.selection.color = #404040
# area that's not in use by the text (replaced with tildes)
editor.invalid.style = #7e7e7e,plain
# little pooties at the end of lines that show where they finish
editor.eolmarkers = false
editor.eolmarkers.color = #999999
# bracket/brace highlighting
editor.brackethighlight = true
editor.brackethighlight.color = #007fff
editor.gutter.text.font = processing.mono,plain,11
#editor.gutter.text.color = #657d87
#editor.gutter.text.color = #587478
editor.gutter.text.color = #ffffff
# marker for breakpointed lines in left hand gutter (2 ascii characters)
#editor.gutter.breakpoint.marker = <>
#editor.gutter.breakpoint.marker.color = #4a545e
# marker for the current line in left hand gutter (2 ascii characters)
#editor.gutter.currentline.marker = ->
#editor.gutter.currentline.marker.color = #e27500
# bgcolor for the current (highlighted) line
editor.gutter.linehighlight.color=#9aa6c0
# left- and right-hand gutter color
editor.gutter.bgcolor = #2b52f6
# color of vertical separation line
#gutter.linecolor = #e9e9e9
# space (in px) added to left and right of gutter markers
editor.gutter.padding = 3
# squiggly line underneath errors in the editor
editor.error.underline.color = #f63943
# squiggly line underneath warnings
editor.warning.underline.color = #fed456
# lines next to the scrollbar showing where errors are located
editor.column.error.color = #ff5355
editor.column.warning.color = #fed456
# not in use?
#breakpoint.bgcolor = #f0f0f0
#currentline.bgcolor = #ffff96
errors.header.font = processing.sans,plain,12
errors.header.bgcolor = #131313
errors.header.fgcolor = #fff7d5
errors.row.font = processing.sans,plain,12
errors.row.bgcolor = #131313
errors.row.fgcolor = #fff7d5
errors.selection.bgcolor = #404040
errors.selection.fgcolor = #fff7d5
errors.selection.error.bgcolor = #e10c2f
errors.selection.warning.bgcolor = #FDF2E7
#errors.indicator.size = 3
errors.indicator.error.color = #9E0A0A
errors.indicator.warning.color = #EF8115
manager.tab.selected.color = #e6edfe
manager.tab.unselected.color = #2d4251
manager.tab.text.font = processing.sans,plain,14
manager.tab.text.selected.color = #000000
manager.tab.text.unselected.color = #ffffff
# orange circle for updates
manager.tab.update.color = #ed7f15
manager.tab.gradient.top = #132638
manager.tab.gradient.bottom = #122535
manager.tab.background = #132638
# tree for Examples and Sketchbook windows
tree.font = processing.sans,plain,12
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# TEXT - KEYWORDS, LITERALS
# For an explanation of these tags, see Token.java:
# processing/app/src/processing/app/syntax/Token.java
editor.token.function1.style = #007fff,plain
editor.token.function2.style = #007fff,plain
editor.token.function3.style = #669900,plain
editor.token.function4.style = #007fff,plain
editor.token.keyword1.style = #00ff7f,plain
editor.token.keyword2.style = #00ff7f,plain
editor.token.keyword3.style = #669900,plain
editor.token.keyword4.style = #d94a7a,plain
# Primitive (int)
editor.token.keyword5.style = #ff7f00,plain
editor.token.keyword6.style = #00ff7f,plain
editor.token.literal1.style = #7D4793,plain
editor.token.literal2.style = #718a62,plain
editor.token.operator.style = #007fff,plain
editor.token.label.style = #666666,plain
editor.token.comment1.style = #666666,plain
editor.token.comment2.style = #666666,plain
editor.token.invalid.style = #666666,plain