Bloggers Vani Hari and Lisa Leake led a petition to remove synthetic dyes Yellow 5 and Yellow 6 .
In 2013 , food blogger and activist Vani Hari and blogger Lisa Leake launched an online petition drive to compel Kraft Foods Group , Inc. to remove controversial synthetic dyes Yellow 5 ( labeled as Tartrazine ) and Yellow 6 from its macaroni a
Kraft Foods