Multi-color writing and painting instruments with single nib fed with user-selected colored ink

A multicolor writing and painting instrument for writing and painting on a writing surface comprising:

• a tubular housing sized and shaped to be held by fingers of a user;
• an ink-receiving surface within the tubular housing and configured to receive a flow of one of a plurality of different colored inks;
• a nib at an end of the tubular housing configured to deliver the flow of ink received by the ink-receiving surface to the writing surface;
• a separate ink reservoir within the tubular housing configured to hold each of the different colored inks;
• a fluid delivery system within the tubular housing configured to controllably channel ink from any one of the ink reservoirs to the ink-receiving surface;
• a color selection control supported by the tubular housing, coupled to the fluid delivery system, and configured to enable a user to select one of the colored inks and to cause the fluid delivery system to deliver the selected colored ink from the reservoir which is holding this ink to the ink-receiving surface.