TYPE: POP
TITLE: Color POP

The Color POP can be used change a particle's diffuse color or alpha.
There are several mutually exclusive ways to set the color and alpha.
The POP will add the attribute if it doesn't exist already.

This POP modifies the following attributes: Alpha, Cd.

Parameters:
    Activation          - Turns the POP on and off		/activate
    Source Group        - Subset of points to act on

Color: Pass
    Overview            - Do not set the color
Color: Param
    Overview            - Set the color as RGB
    Diffuse Color	- Diffuse color	           /diffr /diffg /diffb
Color: Ramp
    Overview            - Retrieve color from a ramp 
    Ramp                - Use color chooser and edit ramp to alter gradations
    Lookup              - Parameter to evaluate for ramp lookup	/colorrampu
Color: COP
    Overview            - Retrieve color from a COP
    COP Path            - COP to get color from
    U                   - U Parameter to evaluate COP at	/colorcopu
    V                   - V Parameter to evaluate COP at	/colorcopv

Alpha: Pass
    Overview            - Do not set the alpha
Alpha: Param
    Overview            - Set the alpha 
    Alpha               - Point alpha				/alpha
Alpha: Ramp
    Overview            - Retrieve alpha from a ramp
    Ramp                - Use color chooser and edit ramp to alter gradations
    Lookup              - Parameter to evaluate for ramp lookup	/alpharampu
Alpha: COP
    Overview            - Retrieve alpha from a COP
    COP Path            - COP to get alpha from
    U                   - U Parameter to evaluate COP at	/alphacopu
    V                   - V Parameter to evaluate COP at	/alphacopv
Alpha: Speed
    Overview            - Change point alpha according to speed
    Alpha 0 Speed       - Speed where alpha is 0		/alpha0speed
    Alpha 1 Speed       - Speed where alpha is 1		/alpha1speed

Local Variables
    Overview - The standard local variables are usable in this POP.  Please
               refer to the Houdini manual for more details.
