You can set esoteric EagleFiler preferences by clicking the links on this page. Unlike with regular settings, you must generally quit and re-launch EagleFiler in order for an esoteric preference to take effect.
Experimental Options
You can change the colors EagleFiler uses to display plain text files. For example, to get green text on a black background you could enter these commands into Terminal:
defaults write com.c-command.EagleFiler PlainTextForegroundColor -array 0 .4 .1 1 defaults write com.c-command.EagleFiler PlainTextBackgroundColor -array 0 0 0 1
The colors are specified as RGBA values. To return to the default colors:
defaults delete com.c-command.EagleFiler PlainTextForegroundColor defaults delete com.c-command.EagleFiler PlainTextBackgroundColor
This lets you change the extension of new plain text files that EagleFiler creates on your behalf. For example, you could change it from the default txt to md to create Markdown files:
defaults write com.c-command.EagleFiler NewPlainTextExtension md