Paint inspiration

I was surfing today and somehow came across this on the design*sponge site:I think it is a great way to transition colors from space to space and it seems pretty DIY-able. Not sure when/where to use this, or if I could even find a design that I like, but I will tuck it away for the future.

Also, I've always liked the idea of having a chalkboard wall. Here's a way to make custom colors of it. All you need to do is mix up the following:

3 teaspoons acrylic paint
1 1/2 teaspoons glazing medium (water-based)
1/2 teaspoon powder tile grout

Or from everyone's favorite Martha:
Custom Colors: How To

Start with flat-finish latex paint in any shade. For small areas, such as a door panel, mix 1 cup at a time.

1. Pour 1 cup of paint into a container. Add 2 tablespoons of unsanded tile grout. Mix with a paint stirrer, carefully breaking up clumps.
2. Apply paint with a roller or a sponge paintbrush to a primed or painted surface. Work in small sections, going over the same spot several times to ensure full, even coverage. Let dry.
3. Smooth area with 150-grit sandpaper, and wipe off dust.
4. To condition: Rub the side of a piece of chalk over entire surface. Wipe away residue with a barely damp sponge.