Jwalk posted almost six months ago about Ivan F. Moala’s ImageToXL and I finally got around to downloading it after discovering I’d bookmarked it. I’m not sure when I’ll ever use this for a practical reason, however it’s a pretty awesome spreadsheet and worth the download.
Not only does ImageToXL convert an image to Excel cells, Ivan included a couple effects like Greyscale and Negative. To download scroll almost all the way down the page and you’ll see the download link.
Here’s a screenshot of the OCC Black Widow chopper in Excel, made using ImageToXL. Keep in mind the screenshot is not of an inserted image, but a few thousand colored cells: