Have you thought about painting a floor cloth? You can make one on the back side of a vinyl remnant. You can cut it any size and shape you want. There are instructions on the web I'm sure. Basically, you prime, paint, and seal with a few coats of polyurethane.

That will give you the color you crave without a lot of expense. If the chairs slide off it, it won't be such a big deal. You can make it fun or funky, or more formal if you wish. Google "floor cloth" and hit images for ideas and click on the pics you like to see if there are good articles. If you don't have artistic talent, you can use stencils. If you have kids, you can make it a family project. If it turns out badly, you can always relegate it to the garage or patio and start again with your more advanced knowledge/skills.

The thick felt pads that self stick onto the bottom of the chair's legs. They are meant for the bottom of furniture and tables. They come in all sorts of diameters to fit different leg widths. They are about an 1/8 of an inch thick. Dont use anything that nails into the bottom of the chair. I tried the magic glides and they scratched my floor even though they said they wouldnt. The glides are great on carpet. The pads do wear away over time and need to be replaced. But it takes a while. I always keep a few extras on hand...just in case. They sell them at HD, Lowes, Target, Walmart, etc.

Ditto what gk5040 said. I used the felt pads and they don't scratch our floors. You should check them periodically to make sure that they're still "stuck" to the chair legs and also to clean them of grit, etc., which will scratch your floors.