Embird can now support custom thread catalogs. However, you will not find
any tool in Embird for creating custom thread catalogs. It is supposed,
that you prepare the text file with thread chart e.g. in NOTEPAD, or in
any other text editor, and then save this text file (with .TXT or .TCH
extension) to C:\EMBIRD32\CHARTS folder. Each line of this file must have  
the following structure:

THREAD_NUMBER,NAME_OF_THREAD_CATALOG,NAME_OF_COLOR,R_VALUE,G_VALUE,B_VALUE

where THREAD_NUMBER is the number of the thread in catalog
      NAME_OF_THREAD_CATALOG is the name of the thread catalog
      NAME_OF_COLOR is the name of color (can be omitted, see example below)
      R_VALUE,G_VALUE,B_VALUE are R,G,B values used to obtain the right color

Here is an example of custom thread catalog, containing four Madeira Rayon
threads. For thread number 1087, the name of color is not specified. These
four lines should be stored in text file, e.g. in MADEIRA.TXT and the file
must be saved to C:\EMBIRD32\CHARTS folder to be accepted by Embird.
          
**************************** EXAMPLE *************************************
1000,Madeira Rayon,Black,0,0,0
1003,Madeira Rayon,Natural White,240,237,228
1087,Madeira Rayon,,212,206,197
1187,Madeira Rayon,Dark Pink,208,0,87
************************* END OF EXAMPLE *********************************