Your search for "mustard yellow" revealed the following:

Goldenrod | 5 INCH | Qualatex Latex Balloons | Package 10
New
Out stock
$2.50
Wonder Woman Balloon | 38 INCH
New
Out stock
$7.00
Cabana Stripe Paper Table Runners
New
Out stock
$18.75
260 | Sempertex (Betallatex) Modeling Latex Balloons | Package 10
New
Out stock
$2.50
Latex Balloon Garland Kit | Blue Bear Theme
New
Out stock
$15.00
Matte Chalk Latex Balloons | 16 INCH
New
Out stock
$9.60
Goldenrod | 36 INCH | Qualatex Latex Balloons
New
Out stock
$6.50
Modern Sunny Sunflower Foil Balloons | 18 Inch
New
Out stock
$2.50
Rubber Duck Balloons | 30 INCH
New
Out stock
$6.00
Cute Lion Foil Balloon | 32 INCH
New
Out stock
$7.95
Cute Circus Lion Foil Balloons | 29 INCH
New
Out stock
$8.75
Strawberry Shortcake Foil Mylar Orbz Balloons | 15 Inch | Official Licensed Product
New
Out stock
$8.50