[Solved] Make button colors easier to read

[poderac]

When closing a spreadsheet, the blocks that say "save", "cancel", "discard", are black on dark blue. I cannot read them. How do I change these colors?

Edit: Changed subject, was Colors Make your post understandable by others -- robleyd, moderator

[robleyd]

Perhaps Mac FAQ Q47/A47: How I make the button color (black letters on dark blue) easier to read? may be helpful.