Examples:

• The last number—printed in red ink—appeared on May 19.
• Eddie, there's a little matter of red ink in the financial statement.
• Towards the middle of each, certain words are written in red ink.
• So cheap, my goodness, I thought it would taste like red ink.
• That's a lot of red ink.
• While the legislation eliminates $220 million in red ink in the budget year that ends June 30, it technically doesn't reduce much larger shortfalls on the immediate horizon.
• The writer corrects his mistakes in red ink or remove it.
• There's plenty of red ink under your name too.
• And the red ink means he got a promotion.
• Noah, you can write it in the books in red ink.