Then color over the black with a color of your choice. Experiment with how much black and how much color you need to get the value you want. It changes depending on the color you're using. You can add more black on top to make it darker. If black doesn't give you the look you want, try blending with other colors.
Colored pencils come in many different values.
Here light pink and dark pink Colorific pencils are blended to make a medium pink. Make a Tint To make a lighter value or tint, first color firmly with white. Then color lightly over the white with a color of your choice. Experiment with how much white and color you need to get the value you want.