Here are various ways how you can enhance a fire effect I have explained in the tutorial Fire Effect: Smoke Brushes and Layer Styles.
Adjust Layer Styles
Adjust the layer styles to change the overall colors.
Change Base Color
You can change the base color to give more vibrance to the fire. In the following example I use yellow instead of white.
Brightness and Contrast
Adjust the brightness and contrast of the mask on the solid color layer.
Use levels to change the black and white can give you some nice effect, here an example
With Curves you have quite some flexibility. Play around to check what effects you can create.
Copy your layer and use another color as a backdrop to add some additional color.