It is easy to use but has a very small water capacity. Still, you can do several stains with a single fill of a few ounces and you can walk away from it for just a minute or two while it works. I highly recommend using ONLY distilled water or you will develop problems pretty quick. I buy a gallon of distilled water and keep it beside my steamer on the shelf in my van. I've been using the same B & D steamer for several years now. Even using strictly distilled water I just started having trouble with it and need to see if I can descale it with some white vinegar this week.
I forgot I purchased a “Pure” steamer from amazon. It’s got a large head for a steaming pad. While it’s bigger then these wallpaper steamers it’s all bought and paid for. I think I’ll keep it in the truck. AZ is known for terrible hard water so I hear ya on distilled!
From what I can see of your spots there, it looks like you might have successfully removed the organic portions of the color (through oxidation) and the synthetic dyes or pigments still remain. If this is the case, a reducing agent like Red One, or a two-part reducer like Red Zone or Red Relief, should handle the rest, especially when used with one of the power steamers the guys are recommending above.
The blue in particular looks like it may have been an ink, from the way it's feathering and fading...?