If you're keen on doing some treatment or dyeing yourself, there are many easy ways (both chemically and organically) that you can get the job done.  It does, of course, depend on the scale and complexity of the job you have in mind – if you are considering large-scale bleaching or dyeing, for instance, it is probably advisable to pay a company to do it for you – but if your job is small, you shouldn't have too much difficulty finding the products you need to take a big leap into the world of textile treatment.

One of the easiest ways to change the look of fabric is through bleaching – and there are a number of ways to achieve this.  Simple peroxide is available from most supermarkets in the laundry aisle, and you can achieve your desired effect by reading the instructions on the bottle.  If, however, you want to take the natural route, you can use lemon juice and sunlight.  Obviously not as powerful as the chemical-based peroxide, lemon juice may take longer and will not have as marked an effect, but it is all natural.  For dyeing, a simple dye capsule can be dropped into the wash or laundry tub with the fabric you're intending to colour – capsules are available from pharmacists and fabric stores, and should come with instructions for use.