Change the slider as you wish and click the green flag! It will generate a cool gradient. R button will reset the gradient value to 0.25 which is default. Presets- Sunset - 0.05 Rainbow - 0.25
mee!! Don't change the slider while creating the gradient. It will disturb the creating process. If you dont like the delay, well, click the green flag while pressing the shift key (turbo mode)