Are there red white and yellow cords that plug into a computer?

This is a hard question to answer, it could mean two things:

# Can you plug audio-visual cables into a PC? # Do wires of those colors exist?

The answers to both are right here:

# I'm assuming that by red, white, and yellow you are referring to RCA cables (see: http://en.wikipedia.org/wiki/Rca_cables). Depending on your PC the answer is probably no, at least not directly. You can attach a VCR, DVD player, game console, or similar device to your computer using a video capture card (or usb stick, google it). Keep in mind that the three cables actually carry different data, you may not need to plug in all three. The yellow one carries video, the white is the left speaker audio, the red is the right speaker audio. The wires are color coded for convenience only, the wires on the inside are all the same.

# Yes, the cables that plug into a computer can be any color. Their color is determined by the plastic that insulates them. If you are looking for colorful cables, your local Radio Shack is likely to have the cable you need in the color you want. Otherwise you can color a cable yourself with spray paint. Just make sure to cover any exposed metal parts with masking tape first.