Your search for "mustard yellow" revealed the following:

Pink Lemons Paper Plates | 8 Inch Round Scallop Edge | Package 8
New
Out stock
$8.00
Chalk Yellow Custom Latex Balloons
New
Out stock
$5.00
Matte Pastel Yellow | 24 INCH | Sempertex (Betallatex) Latex Balloons | Each
New
Out stock
$3.50
Lemonade Light Yellow | 17 INCH | Tuftex Latex Balloons
New
Out stock
$4.25
Pokemon Pikachu Paper Plates | Licensed |  9 Inch | Package 8
New
Out stock
$6.50
Teletubbies Balloons | Laa Laa | 43 INCH
New
Out stock
$6.50
Goldenrod | 36 INCH | Tuftex Latex Balloons | Each
New
Out stock
$5.50
Bumble Bee Foil Balloons | 34 Inch
New
Out stock
$6.50
Lemon Slice Paper Napkins | Dinner Napkins | Package 24
New
Out stock
$8.00
Emoji Balloons 18 IN
New
Out stock
$2.50
Lightning Bolt Foil Balloon | 36 INCH
New
Out stock
$6.75