wildfire config.pro option documentation for: WELD_COLOR            

weld_color

specifies the color to display welds created in pro/engineer 2000i and later. the three decimal values in the range from 0 through 100 specify the percentages of red, green, and blue (in this order) in the resulting color. for example, 0 0 49specifies a medium blue color.

rgb color values (range 0M-^V100)

defaults and available variables:

1.000000 0.500000 0.000000*o red=1.00, green=0.50, blue=0.00

note: the default value is followed by an asterisk (*).