Changing Color of Words

In the "Words" section there is an option to change the color of that particular word or phrase, why does it only change ONE and not all of that word or phrase? For instance: If I want to change the word Mom to RED and leave the rest of the cloud a different color, it only changes one of the words Mom to red and leaves the others the same color as the cloud.

The color (and other attributes) are only applied to the first occurence of that word but not to its duplicates. It is done intentionally because in general it makes cloud look more vivid.

If you wish to have more control over words I suggest you using MS Excel to create words data and then import it in Tagul. Don't forget to disable words repetition in that case.