Your search for "mustard yellow" revealed the following:

Pastel Yellow Round Orbz Balloon | 16 INCH
New
Out stock
$5.95
Pikachu Pokemon Foil Balloon | 31 INCH
New
Out stock
$9.50
Lemon Fruit Balloons | 18 INCH
New
Out stock
$3.50
Pearl Citrine Yellow Latex Balloons | 11 INCH (28cm) | Package 10
New
Out stock
$3.90
Deluxe Honey Yellow LINK-O-LOON® | 12 Inch | Sempertex Latex Balloons | Package 10
New
Out stock
$4.50
Crystal Yellow | 11 INCH | Tuftex Latex Balloons | Package 10
New
Out stock
$3.50
Yellow Marble Agate Latex Balloons | 11 INCH | Package 6
New
Out stock
$5.50
Yellow | 36 INCH | Tuftex Latex Balloons | Each
New
Out stock
$6.00
One Daisy Flower Party Script Balloons | Yellow and White
New
Out stock
$4.95
Minion Balloons | 18 INCH Square | Licensed
New
Out stock
$3.00
Satin Luxe™ Pastel Yellow | Heart Foil Balloons | Anagram | 18 Inch
New
Out stock
$1.95