Houston, Rasterbator will work with colored as well as mono/greyscale images
You can [1] convert your gradient vector or just [2] start out with a raster if you have an image you want vector 'dots' for
Works VERY well either way
Starting with a vector allows you to make custom shapes. Make sure the shape is a gradient (or a set of different gradients) and then just convert to jpg
There's a post I made somewhere on the 'old' board (I think?) with step by step instructions.
...........ps slow going here
I havent forgotten
Hopefully I'll get a chance to look at your files this weekend
xoxoxo