This is a great idea for small concrete patios that you want to dress up.
This can be done over a weekend and you will have something to be proud of and admire for a long time.
Here is a list of supplies I used:
2 qt of stone color
1 qt of "grout" color
1 package of anti-skid mix in powder
1" & 3" paint brushes
4-5 Outdoor Acrylic paint colors
Step 2: Lines
Clear your patio of furniture and sweep, then scrub with a biodegradeable concrete cleaner, rinse off with a garden hose and let dry compeletely.
Color and design are really up to you.
Mix in about a quarter of your anti-slip powder to the grey quart of paint.
I started by drawing out my grout lines in grey. Try to keep all your stones about the same size, never 4-sided and never have two joints meet up to make a straight line. Here is a guide to kind of how I drew my lines.
Step 3: Adding Color and Texture
Add a quarter of the bag of anti-skid powder per quart to your stone color. Paint each cell, barely covering the edge of your grout line. I found it easier to press the 1" brush on its flate edge into the stones' corners of the stone to avoid brushmarks.
Sponge on color. Go all the way to the stone edge. It's okay if you go on to the grout some.
Instead of painting different stones a solid color, I went back and sponged some lighter and darker colors on differnt stones, trying to keep some sort of pattern going. Some you can almost cover the whole stone and some you can just lightly sponge. This will add some variety to your stonework.
After your textures and colors have dried, go back over the grout lines where you went off the stones a bit.
I would wait at least a day before putting patio furniture back on it.
And you're done!