Overdyeing Reclaimed Yarn

I was so pleased with the blue linen hand towel that I reclaimed yarn from a sage green ramie cotton blend vest. Sage green is the color in my kitchen, so it made sense.

But the yarn was just a little too pale. I decided to experiment with over-dyeing it with food coloring. I figured if it didn't take, it wouldn't be a great loss. This is a picture of the yarn before I dyed it.

 This is a picture of the yarn after I dyed it.

There's very little, if any difference in the color. I don't know if it's because ramie-linen doesn't take dye too well, or the food coloring wasn't up to the task. Oh well... nothing ventured, nothing learned. I'm still going to use it for kitchen towels.