How can i dye my hair black using brown hair dye?

Ok, so my hair is like a icky gross dishwater blonde;; i absolutely HATE it! My mother said i can dye it brown...so all you blonde..or former blonde people out there, what brand and color of brown hair dye would turn out really dark., almost black looking? it would be HIGHLY appreciated., i will choose a best... show more Ok, so my hair is like a icky gross dishwater blonde;; i absolutely HATE it! My mother said i can dye it brown...so all you blonde..or former blonde people out there, what brand and color of brown hair dye would turn out really dark., almost black looking? it would be HIGHLY appreciated., i will choose a best answer (so it isnt a lost cause) :D pleaseeeeee help me!!!
Update: my mom wont let me dye it black, just brown (im gunna be sneaky and pretend it was an accident) lol., i know its immature...o well(:
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