Hello,
Looking to find tank to bowl parts for an old Kohler toilet model K4550.

I have tried to repair with will fit parts and the toilet is leaking. I am also looking to find out how to identify the color of the toilet.
Any suggestions ?

Thank you

Can you check the model number on that toilet? I went back as far as 1956 rough in book and no mention of the K4550. As far as color look a the link. This shows every color Kohler has made and the years of production for the color.

[www.us.kohler.com]

The sponsor's site lists Kohler K4550 toilet tank lids here:

[www.plumbingsupply.com]

There is a variety of colors on their list:

Blossom Pink - 20 5/8 x 8 1/4" - Aug 7 1961
Blue - 20 3/8 x 8 1/8" - Oct 21 1968
Desert Gold - 20 1/2" x 8 3/8" - Mar 26 1965
Dresden Blue - 20 1/2" x 8 1/4" - June 7 1960
Light Turquoise - 20 3/8" x 8 1/4" - Mar 22 1965
Peach Bisque - 20 3/8" x 8 3/8" - Oct 15 1965
Pink - 20 1/2" x 8 1/4"
Venetian Pink - 20 3/8" x 8 1/4" - Oct 21 1984
Yellow - 20 1/2" x 8 3/8" - Sept 16 1963

Got the model number off the tank lid. There are also some other numbers. Not sure what they indicate but they are 21,56,65, and 22. Thanks for your help. I will look at the Kohler site for colors.

Got the number off the tank lid. Maybe it is an American standard ?

If you have the model number of your tank. So you can easily buy the part with him. And the number you have provided. At the same, you will get the color very easily. We will do our best to help you solve this problem.