There are a wonderful selection of pulls and braids hat can be added. For inspiration click here to view a wide range at New House Textiles.
There are different cassette options, colours and even pattern available to choose from. Most blinds will now have different hardware colour choices, eg. anthracite hardware to suit anthracite windows. Be sure to ask for more details when choosing your blinds.
Laminating your own fabric is also an option. If you wanted a roller blind in a certain fabric maybe to match other soft furnishings then it can be laminated. This will allow the fabric to roll up correctly like any other roller blind fabric.