Download all those shaders ---> http://www.mediafire.com/?w555o9l1fbv37xa
Note: Freeze al transforms of ur model for a correct work of displacement and procedural textures.
Note2: all these shaders are created for linear workflow, if u work in a sRGB workspace delete all //color_correction// nodes.
Yellow (with post corrections)
Material Editor Tree
Yellow
Waxy Yellow
BlueRubber
Wet Brown Clay
Marble
Black Plastic