Lexmark:

COLOR CARTRIDGE

1.     The filler holes of the cartridge are located under the top.  Remove the top before refilling by carefully prying it off with pocket knife.

2.    Cover the other two holes with tape while filling one. This will prevent cross contamination.
It's also a good move to check the color chambers with a tooth pick before putting in ink. The chambers are somewhat dry and you might have to push the tooth pick in far to get ink on it.

3.    Insert the filling needle into the filler hole of the color to be refilled.

4.    Slowly inject up to 8ml. of ink until the sponge is saturated.

Important:  When you take off the color cartridge cap will notice that the sponge is white.  Do not change the sponge color.  Fill the individual colors until the color just begins to show in the white sponge.

5. After refilling the top can be put back on with scotch tape.

6. Replace the cartridge and run 1 - 3 cleaning cycles as per printer instructions.
Or print the following pages:
http://www.refillinstructions.com/color.htm for Color 
For best results, leave cartridge in printer for 8 hours after refilling so the ink can saturate the entire sponge. (Allows ink to flow to the print head).

The photo cartridge is filled the same way as the regular color cartridge.

A Refill Kit should include Ink plus the following:
3 Syringes

www.PrinterFillingStation.com
Printer ink and Refill kits for your Printer