You can add images and downloadable files to tables. Here are the options.

  1. Add some text in the cell, then convert it into a link by clicking the link button. If you can't select a particular file, then you will need to find the file in file library, click on the file, and copy the URI location, then past that location in the HTML link in the cell. To do that you will need to click the SOURCE button, then find the HTML section for the cell.
  2. Same as above. Find an image in File Library. Copy its URI then paste it into the HTML of the cell as an image.

To change the cell colour, if you know HTML you can edit the html code for table using the SOURCE button again.