Hi, Debbie. This is really easy. Go to your home center or paint store and ask what they have in mismatched paint. This is paint that did not turn out to be tinted the right color. Find a can that is an oil-based paint, like an enamel, and an earth toned off-white. You might want to bring a pot with you or buy some more there to set some idea how the color will look.
Glob a little on the pots with a cheap foam brush. Let it set-up a few minutes and wipe it off or nearly so. You want a lot of variation in the amount of paint around the pot but a lot of area where the red pot shows thru. That's all there is to it. The paint should not be more than $3 a gallon, a couple of bucks for a couple of brushes. Rags are up to you. If you don't have many, get some, but choose some that will not have a bunch of strings and lint that will come off easily. Cotton sheets or similar are about the best. It's probably not a bad idea to get a few small pots to practice on, too. Rubber gloves, like dishwashing gloves, are your option but you will want some paint thinner for clean-up. Follow the safety rules when using the thinner and be careful not to get any paint residue in it. You will want it to stay clean and clear for future projects.
If you are really lucky, you might even find some old paint down in your basement that might work and is still liquid. This can be really cool because you might find that the color will fit well with the room where the paint was used.
Let the paint sit for a couple of days to harden well. If you have no further use for the paint, dispose of it responsibily.