wpf - Can't produce a solid color by specifying directly R, G, B and A -

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i have converter determines colors based on status items. going tweak colors, opacity etc, can't colors match starters.

question: why isn't outcome of below 2 lines of code equivalent? going use green example. when run the first produces normal solid green, second light green definite opacity/see through:

return new solidcolorbrush(colors.green);   return new solidcolorbrush{color = new color{a = 100, b = 0, g = 128, r = 0}};

as test, when create rectangle in blend , fill green:

<rectangle fill="green"

i see r 0, g 128, b 0 ,and 100%

a not percentage, byte value r, g , b. have specify 255 100% opacity.


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