I'm not sure why this block is called Two Color. The example I saw used three colors plus a background! Perhaps it is referring to the two colors for the star points. However, it is a lovely star and pinwheel design.
The Love in a Mist quilt block is an easy block for beginners with only half square triangles, square in a square and square patches. This traditional style block was originally done with only a light and a dark or medium colored fabric. I had to do my own thing so I added in another color. Additionally, the center star could be a fourth color.