If you want the extended color set, you will need to add \usepackage[dvipsnames,tables]{xcolor} to your header.tex file.

The 68 standard colors known to dvips are (in alphabetical order):
Apricot Aquamarine Bittersweet Black Blue BlueGreen BlueViolet BrickRed Brown BurntOrange CadetBlue CarnationPink Cerulean CornflowerBlue Cyan Dandelion DarkOrchid Emerald ForestGreen Fuchsia Goldenrod Gray Green GreenYellow JungleGreen Lavender LimeGreen Magenta Mahogany Maroon Melon MidnightBlue Mulberry NavyBlue OliveGreen Orange OrangeRed Orchid Peach Periwinkle PineGreen Plum ProcessBlue Purple RawSienna Red RedOrange RedViolet Rhodamine RoyalBlue RoyalPurple RubineRed Salmon SeaGreen Sepia SkyBlue SpringGreen Tan TealBlue Thistle Turquoise Violet VioletRed White WildStrawberry Yellow YellowGreen YellowOrange

Use them via {\color{ColorName} your text} .