>>>The code in the message generates HTML table with 16 columns and 17 rows. Your code generates table with 8 columns and 28 rows. 6 rows are missing.
>>
>>The color picker on this site generates 8 by 32. There might be a browser issue here which would explain which you don't see them all.
>
>Could be it because I'm using large fonts?

I would say yes as you use a large resolution. However, I'm not using any font in that page.

Please, retry again. I have changed the technique of parsing.