colour of \textrm{}

[Paul Stansell]

Hi,

Can anyone tell me how I can change the colour of roman characters in
\textrm{} in the maths environment.  In lyx-1.3.1 (qt) their colour is not
changed using Preference > Look and feel > Colors > math (but their
background colour is changed with Preference > Look and feel > Colors >
math background).

Thanks for your help,

Paul Stansell