The researcher Lucia Burgio describes the scientific analysis of pigments and dyes used on the Leman Album designs in a blog.
The blog refers to the MOLAB access at the Victoria & Albert museum in London for the LEMAN project successful to the 3rd Call carried out in 2017.
See the blog at http://www.vam.ac.uk/blog/conservation-blog/james-lemans-glorious-palette-part-2 (part 2) and at http://www.vam.ac.uk/blog/conservation-blog/james-lemans-glorious-palette-part-3 (part 3).