Tools > Options > Colour
We have 4 companies using SAGE 50 Accounting and as the new version 29 allows access to more than one company at a time we thought it prudent to change the colour scheme on each company to avoid unintentional entries. However, this is not possible as when you change the colour on one company it changes the scheme on all.
My suggestion is that we have the option to have a different colour in each company