Your search for "mustard yellow" revealed the following:

260 | Tuftex Latex Balloons | Package 10

$2.50

Select Options Select OptSold Out Pre-Order

11 INCH | Tuftex Latex Balloons | Package 10

$3.50

Select Options Select OptSold Out Pre-Order

17 INCH | Tuftex Latex Balloons | Package 6

$4.25

Select Options Select OptSold Out Pre-Order