Goldenrod yelow
NO, a shiny yellow is gold.
Brownish blackish type of color
Yellow and purple make a shade of brown when mixed together.
yellow..
yellow
Yellow and tiny bit of brown and grey
The color that red, yellow, and blue make, is black. Although I read in a book that red, yellow, and blue makes brown. Though that is not true. If that wasn't the color you wanted, I would try doing gray, mixing the color with red. (That would turn out to maybe brown,) If it still isn't brown, Then you are out of luck. Sorry! :(
Yellow and brown mix to make a muddy yellow color. Depending on what undertones the brown has the color might seem orange or greenish. If there is more brown than yellow the color will be darker.
brown and yellow
Green can be mixed with the color as can yellow to make brown.
brown
Brown