RGB values for clear color in iphone?

What is RGB and alpha value for clear color? i want to do it programmatic, don't need [UIColor clearColor]...??

To represent clear color in rgb format one may use

'rgba(0,0,0,0)'

It just includes the alpha value.

According to the Documentation:

"Returns a color object whose grayscale and alpha values are both 0.0."

Just use:

[UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.0];                

Create a color object whose grayscale and alpha values are both 0.0

UIColor *clearColor = [UIColor colorWithWhite:0.0/255 alpha:0.0];