The two astronaut figures stand in the center of the coloring page, clad in different colors of suit. The one on the left is blue and the one on the right is yellow. They are standing on a white surface, with a black border marking the edge of the page. Both of them look skyward with a terrified expression, as if something is happening above their heads. To capture the atmosphere of the page, I would recommend using blues, yellows, and blacks to create a sense of tension. The astronauts could be coloured a bright blue and a bright yellow to make them stand out against the white surface. The black border could be filled in with splotches of grey to give an eerie feeling to the scene. For a final touch, have the whiteness of the background gradually blend into a dark grey, almost bluish near the edge to create a sense of anxiety as the page fades away.