How to use the presto.ppgplot.pgscr function in presto

def reset_colors():
    lo_col_ind, hi_col_ind = ppgplot.pgqcol()
    ppgplot.pgscir(lo_col_ind, hi_col_ind)
    ppgplot.pgscr( 0, 0.00, 0.00, 0.00) # Black (background)     
    ppgplot.pgscr( 1, 1.00, 1.00, 1.00) # White (default)        
    ppgplot.pgscr( 2, 1.00, 0.00, 0.00) # Red                    
    ppgplot.pgscr( 3, 0.00, 1.00, 0.00) # Green                  
    ppgplot.pgscr( 4, 0.00, 0.00, 1.00) # Blue                   
    ppgplot.pgscr( 5, 0.00, 1.00, 1.00) # Cyan (Green + Blue)    
    ppgplot.pgscr( 6, 1.00, 0.00, 1.00) # Magenta (Red + Blue)   
    ppgplot.pgscr( 7, 1.00, 1.00, 0.00) # Yellow  (Red + Green)  
    ppgplot.pgscr( 8, 1.00, 0.50, 0.00) # Red + Yellow (Orange)  
    ppgplot.pgscr( 9, 0.50, 1.00, 0.00) # Green + Yellow         
    ppgplot.pgscr(10, 0.00, 1.00, 0.50) # Green + Cyan           
    ppgplot.pgscr(11, 0.00, 0.50, 1.00) # Blue + Cyan            
    ppgplot.pgscr(12, 0.50, 0.00, 1.00) # Blue + Magenta         
    ppgplot.pgscr(13, 1.00, 0.00, 0.50) # Red + Magenta          
    ppgplot.pgscr(14, 0.33, 0.33, 0.33) # Dark Gray              
    ppgplot.pgscr(15, 0.66, 0.66, 0.66) # Light Gray   	  
    for ci in range(16, hi_col_ind+1):
        ppgplot.pgscr(ci, 0.00, 0.00, 0.00) # Black (background)     

def reset_colors():
    lo_col_ind, hi_col_ind = ppgplot.pgqcol()
    ppgplot.pgscir(lo_col_ind, hi_col_ind)
    ppgplot.pgscr( 0, 0.00, 0.00, 0.00) # Black (background)     
    ppgplot.pgscr( 1, 1.00, 1.00, 1.00) # White (default)        
    ppgplot.pgscr( 2, 1.00, 0.00, 0.00) # Red                    
    ppgplot.pgscr( 3, 0.00, 1.00, 0.00) # Green                  
    ppgplot.pgscr( 4, 0.00, 0.00, 1.00) # Blue                   
    ppgplot.pgscr( 5, 0.00, 1.00, 1.00) # Cyan (Green + Blue)    
    ppgplot.pgscr( 6, 1.00, 0.00, 1.00) # Magenta (Red + Blue)   
    ppgplot.pgscr( 7, 1.00, 1.00, 0.00) # Yellow  (Red + Green)  
    ppgplot.pgscr( 8, 1.00, 0.50, 0.00) # Red + Yellow (Orange)  
    ppgplot.pgscr( 9, 0.50, 1.00, 0.00) # Green + Yellow         
    ppgplot.pgscr(10, 0.00, 1.00, 0.50) # Green + Cyan           
    ppgplot.pgscr(11, 0.00, 0.50, 1.00) # Blue + Cyan            
    ppgplot.pgscr(12, 0.50, 0.00, 1.00) # Blue + Magenta         
    ppgplot.pgscr(13, 1.00, 0.00, 0.50) # Red + Magenta          
    ppgplot.pgscr(14, 0.33, 0.33, 0.33) # Dark Gray              
    ppgplot.pgscr(15, 0.66, 0.66, 0.66) # Light Gray   	  
    for ci in range(16, hi_col_ind+1):
        ppgplot.pgscr(ci, 0.00, 0.00, 0.00) # Black (background)     

ppgplot.pgscir(lo_col_ind, hi_col_ind)
    ppgplot.pgscr( 0, 0.00, 0.00, 0.00) # Black (background)     
    ppgplot.pgscr( 1, 1.00, 1.00, 1.00) # White (default)        
    ppgplot.pgscr( 2, 1.00, 0.00, 0.00) # Red                    
    ppgplot.pgscr( 3, 0.00, 1.00, 0.00) # Green                  
    ppgplot.pgscr( 4, 0.00, 0.00, 1.00) # Blue                   
    ppgplot.pgscr( 5, 0.00, 1.00, 1.00) # Cyan (Green + Blue)    
    ppgplot.pgscr( 6, 1.00, 0.00, 1.00) # Magenta (Red + Blue)   
    ppgplot.pgscr( 7, 1.00, 1.00, 0.00) # Yellow  (Red + Green)  
    ppgplot.pgscr( 8, 1.00, 0.50, 0.00) # Red + Yellow (Orange)  
    ppgplot.pgscr( 9, 0.50, 1.00, 0.00) # Green + Yellow         
    ppgplot.pgscr(10, 0.00, 1.00, 0.50) # Green + Cyan           
    ppgplot.pgscr(11, 0.00, 0.50, 1.00) # Blue + Cyan            
    ppgplot.pgscr(12, 0.50, 0.00, 1.00) # Blue + Magenta         
    ppgplot.pgscr(13, 1.00, 0.00, 0.50) # Red + Magenta          
    ppgplot.pgscr(14, 0.33, 0.33, 0.33) # Dark Gray              
    ppgplot.pgscr(15, 0.66, 0.66, 0.66) # Light Gray   	  
    for ci in range(16, hi_col_ind+1):
        ppgplot.pgscr(ci, 0.00, 0.00, 0.00) # Black (background)     

ppgplot.pgscr( 2, 1.00, 0.00, 0.00) # Red                    
    ppgplot.pgscr( 3, 0.00, 1.00, 0.00) # Green                  
    ppgplot.pgscr( 4, 0.00, 0.00, 1.00) # Blue                   
    ppgplot.pgscr( 5, 0.00, 1.00, 1.00) # Cyan (Green + Blue)    
    ppgplot.pgscr( 6, 1.00, 0.00, 1.00) # Magenta (Red + Blue)   
    ppgplot.pgscr( 7, 1.00, 1.00, 0.00) # Yellow  (Red + Green)  
    ppgplot.pgscr( 8, 1.00, 0.50, 0.00) # Red + Yellow (Orange)  
    ppgplot.pgscr( 9, 0.50, 1.00, 0.00) # Green + Yellow         
    ppgplot.pgscr(10, 0.00, 1.00, 0.50) # Green + Cyan           
    ppgplot.pgscr(11, 0.00, 0.50, 1.00) # Blue + Cyan            
    ppgplot.pgscr(12, 0.50, 0.00, 1.00) # Blue + Magenta         
    ppgplot.pgscr(13, 1.00, 0.00, 0.50) # Red + Magenta          
    ppgplot.pgscr(14, 0.33, 0.33, 0.33) # Dark Gray              
    ppgplot.pgscr(15, 0.66, 0.66, 0.66) # Light Gray   	  
    for ci in range(16, hi_col_ind+1):
        ppgplot.pgscr(ci, 0.00, 0.00, 0.00) # Black (background)     

def reset_colors():
    lo_col_ind, hi_col_ind = ppgplot.pgqcol()
    ppgplot.pgscir(lo_col_ind, hi_col_ind)
    ppgplot.pgscr( 0, 0.00, 0.00, 0.00) # Black (background)     
    ppgplot.pgscr( 1, 1.00, 1.00, 1.00) # White (default)        
    ppgplot.pgscr( 2, 1.00, 0.00, 0.00) # Red                    
    ppgplot.pgscr( 3, 0.00, 1.00, 0.00) # Green                  
    ppgplot.pgscr( 4, 0.00, 0.00, 1.00) # Blue                   
    ppgplot.pgscr( 5, 0.00, 1.00, 1.00) # Cyan (Green + Blue)    
    ppgplot.pgscr( 6, 1.00, 0.00, 1.00) # Magenta (Red + Blue)   
    ppgplot.pgscr( 7, 1.00, 1.00, 0.00) # Yellow  (Red + Green)  
    ppgplot.pgscr( 8, 1.00, 0.50, 0.00) # Red + Yellow (Orange)  
    ppgplot.pgscr( 9, 0.50, 1.00, 0.00) # Green + Yellow         
    ppgplot.pgscr(10, 0.00, 1.00, 0.50) # Green + Cyan           
    ppgplot.pgscr(11, 0.00, 0.50, 1.00) # Blue + Cyan            
    ppgplot.pgscr(12, 0.50, 0.00, 1.00) # Blue + Magenta         
    ppgplot.pgscr(13, 1.00, 0.00, 0.50) # Red + Magenta          
    ppgplot.pgscr(14, 0.33, 0.33, 0.33) # Dark Gray              
    ppgplot.pgscr(15, 0.66, 0.66, 0.66) # Light Gray   	  
    for ci in range(16, hi_col_ind+1):

def reset_colors():
    lo_col_ind, hi_col_ind = ppgplot.pgqcol()
    ppgplot.pgscir(lo_col_ind, hi_col_ind)
    ppgplot.pgscr( 0, 0.00, 0.00, 0.00) # Black (background)     
    ppgplot.pgscr( 1, 1.00, 1.00, 1.00) # White (default)        
    ppgplot.pgscr( 2, 1.00, 0.00, 0.00) # Red                    
    ppgplot.pgscr( 3, 0.00, 1.00, 0.00) # Green                  
    ppgplot.pgscr( 4, 0.00, 0.00, 1.00) # Blue                   
    ppgplot.pgscr( 5, 0.00, 1.00, 1.00) # Cyan (Green + Blue)    
    ppgplot.pgscr( 6, 1.00, 0.00, 1.00) # Magenta (Red + Blue)   
    ppgplot.pgscr( 7, 1.00, 1.00, 0.00) # Yellow  (Red + Green)  
    ppgplot.pgscr( 8, 1.00, 0.50, 0.00) # Red + Yellow (Orange)  
    ppgplot.pgscr( 9, 0.50, 1.00, 0.00) # Green + Yellow         
    ppgplot.pgscr(10, 0.00, 1.00, 0.50) # Green + Cyan           
    ppgplot.pgscr(11, 0.00, 0.50, 1.00) # Blue + Cyan            
    ppgplot.pgscr(12, 0.50, 0.00, 1.00) # Blue + Magenta         
    ppgplot.pgscr(13, 1.00, 0.00, 0.50) # Red + Magenta          
    ppgplot.pgscr(14, 0.33, 0.33, 0.33) # Dark Gray              
    ppgplot.pgscr(15, 0.66, 0.66, 0.66) # Light Gray   	  
    for ci in range(16, hi_col_ind+1):
        ppgplot.pgscr(ci, 0.00, 0.00, 0.00) # Black (background)