When using a sewing machine, it is important to choose the best thread. You need to choose your thread based on the project that you are trying to complete. There is more to thread than just matching the color of your fabric!
For most projects a 100% polyester thread is best. This is a nice strong thread that is unlikely to break or fray. If you cannot find an exact match for the fabric you are using then choose thread that is slightly darker, rather than lighter. Darker thread will not stand out against your fabric like lighter thread will.