Apparently there is an everlasting demand for new keyboard styles. Instead of creating your own keyboard style you might find a suitable one.
At the listed web sites you can find thousands of Style Files for the Yamaha Tyros, PSR, CVP, DGX and YPG range of keyboards. Some styles are free (F); others are for sale (S).
Notice that the quality varies a lot; and that some additional tweaking might be needed.