Hi,

I was playing a bit more with the field style properties and found out that if the font size is always different it works, but as soon as it has a size that was used before it defaults back to normal.

Here's the minimal example:

% begin of example
\starttext

\setupfields
[label,frame,horizontal]
[offset=4pt,height=fit,framecolor=green,background=screen,backgroundscreen=.80]
[height=40pt,width=100pt,align=middle,background=screen,backgroundscreen=.90,frame=off]
[height=40pt,width=100pt,color=red,align=right,style=type,background=screen,backgroundscreen=.90,frame=off]

\setupfield
[sizea]
[horizontal]
[style={\switchtobodyfont[20pt]}]

\setupfield
[sizeb]
[horizontal]
[style={\switchtobodyfont[28pt]}]

\setupfield
[sizec]
[horizontal]
[style={\switchtobodyfont[20pt]}]

\definefield [Emaila] [line] [sizea] [] [pragma@wxs.nl]
\definefield [Emailb] [line] [sizeb] [] [pragma@wxs.nl]
\definefield [Emailc] [line] [sizec] [] [pragma@wxs.nl]

\field [Emaila] [your email]
\par
\field [Emailb] [your email]
\par
\field [Emailc] [your email]

\stoptext
% end of example

(field of Emaila has fontsize 20pt as defined, field of Emailb has fontsize 28pt as defined, but field of Emailc defaults back to normal 12pt? size instead of the defined 20pt. See attached pdf.)

As for the color option, I couldn't figure out why it's not working at all. Some hints appreciated.

Best wishes,
Adam