For those who have interest in this thread, here are the notes I have collected so far:
Discovered that formatting documentation is in the main Documentation page at "Special file filetypes.common" Start w/ Ralesk's MC, as it seems to do best about showing searches and selections, etc. Use the HTML Color Picker at: https://colorpicker.me/ This one will display the color for a hex code, and also shows the hex code for a color. Select the file: ~/.config/geany/colorschemes/mc.conf:
First, save the file under a new name, such as: mc-mod.conf and now edit the renamed file as follows:
Replace: name=Ralesk's MC with: #= name=Ralesk's MC name=MC Modified
Replace: default=#c0c0c0;#114;false;false with: #= default=#c0c0c0;#114;false;false #= default=Very light grey on deep blue-purple default=#f7f7f7;#12126d;true;true
Replace: selection=#000;#369;true;true with: #= selection = White on Turquoise selection=#ffffff;#107b89;true;true
Replace: brace_good=#c0c0c0;#369;true;false brace_bad=#fff;#f00;true;false with: #= brace good = Black on Yellow, brace bad = Black on Orange brace_good=#000000;#f9fb0e;true;false brace_bad=#000000;#fc700d;true;false
Replace: #= comment=#960;;;true with: #= comment = Orange on Dark Blue-Purple comment=#fa9754;#12126d;;true
Replace: marker_search=#000;#0000f0 (Note: this change didn't work as expected) with: #= marker_search=Orange shift marker_search=#000000;#fc700d
Eventually we may find more desired changes, but this is a good start.
Color Codes for Mods above: ------------------------------------ #000000 - Black #FFFFFF - White #c0c0c0 - Grey #eoeoeo - Light grey #f0f0f0 - Light grey #f7f7f7 - Light grey #d0d0d0 - Medium Grey #0000ff - Bright Blue #0000f0 - Bright Blue, slightly darker #3f5fbf - Slate Blue #12126d - Dark Blue-Purple #107b89 - Lighter Turquoise #2eb0c3 - Medium Turquoise #0c5e69 - Darker Turquoise #ff0000 - Bright Red #a80000 - Medium Red #ffff00 - Light Yellow #f9fb0e - Light Yellow #fb8c42 - Bright Orange #fa9754 - Light Orange #fc700d - Medium Orange #b8f4b8 - Pastel Green #00f037 - Light Green #1ffe01 - Light Mint Green #028720 - Medium Green
I have a habit of commenting out original code before replacing it with my changes. This makes the file look a little messy, but I find that it helps me. Of course, anyone else is free to ignore this practice as you wish. Also note: the original mc.conf file uses some coded names for some colors. e.g. #000, #114, #309, #fff. I never found where these names were defined, so I just replaced them with full hex color codes, where I wanted a change. Not the best way, but it worked for me for now. I may eventually find the name definitions; if so, I'll look at this issue again.
Hope this helps someone.
Alan Becker