Quick turnaround on this one since I think these are features that should have been there in the first place! I added a few new things to Download Color Field Images:

• You can now specify how many images you would like to download. It will download as many as it finds, or the number you request, whichever is smaller.
• It will now choose images more randomly instead of finding the first matches. So if you run the action and download 10 red images, then run it again, you will likely get 10 different images.
• All downloaded images now have a watermark with the username of the owner and the URL to the Flickr page for that photo. This was the best way I could find to comply with Flickr’s API rules. This is also the best way to figure out what the licensing is for downloaded images.

So, download it, and give it a go!