A reflection nebula looks blue because tiny dust grains scatter blue light more effectively than red light. Stars near reflection nebula are very hot, blue stars and we see the blue light scattered by the dust. These hot stars often ionize the gas that is mixed with the dust. The sun's energy, which is made by fusion reactions in the core of the sun, flows from the core to the surface in several ways. Energy always goes from hot regions to cooler regions, so it will flow outward.
Radiation is the main method of energy transport within the sun.
Photons are absorbed and re-emitted in random directions over and over as they work their way outward. This is the cause of granulation on the sun.