To achieve matching results, you will need to use matching supplies. Suppliers Unison Pastel. These are a new product of very high quality, made in England. You will not be able to match the above colors with other brands. Unisons are not made by adding white or black to control value, as other brands do.
Colors are much more rich.
I am not getting kickbacks for this pitch. Try calling your better local art supply stores. Most art supply stores will stock these items. Substitute papers can work, if you follow the guidelines on page 3 for the paper.