Now press Quick Render and you should have a similar image to the one shown in Fig.14.
Now we're getting to the exciting part! Our fire needs strong flames to sound realistic, so let's do it ... With a small trick our fire will blaze without even applying a glowing effect (so stay tuned for the next step!).
Still in the default Blinn material panel, press the blank button next to Diffuse Color; in the Material/Map Browser, double-click Gradient (Fig.15).
Now in the Gradient panel, under Gradient Parameters, change Color 1 to full black, Color 2 to full black, and in Color 3 enter Red 255, Green 231, Blue 80, Hue 37, Sat 175, Value 255. In Color 2 Position, enter 1 (Fig.16).
Now, if you hit Enter you will have a similar image to the one shown in Fig.17.
Now the magical trick is to play with the Output Amount, so under Output, in the Output Amount spinner, reduce it to -7.28 (Fig.18).
This negative value will make our fire glow, so what are you waiting for? Do it, and then Press Quick Render!And voila! A nice glowing, flaming fire (Fig.19)!