Hi,
Designer uses predefined objects which are stored as *.xfo files unser your user account.
C:\Users\%username%\AppData\Roaming\Adobe\Designer\10.0\DE\Objects\Standard
You can open such files with any simple text editor and modify them.
For example, you open the NumericEdif.xfo in your editor.
Them you'll see an XML file where you'll find the information for the typeface and the size.
...
<field name="NumerischesFeld" y="0mm" x="0mm" w="67.056mm" h="9mm">
<ui>
<numericEdit>
<border>
<edge stroke="lowered"/>
</border>
<margin/>
</numericEdit>
</ui>
<font size="10pt" typeface="Arial"/>
<margin topInset="1mm" bottomInset="1mm" leftInset="1mm" rightInset="1mm"/>
<para vAlign="middle"/>
<value>
<float/>
</value>
<caption reserve="30.0736mm">
<font size="10pt" typeface="Arial"/>
<para vAlign="middle"/>
<value>
<text>Numerisches Feld</text>
</value>
</caption>
</field>
...
Just change the name of the typeface and the size in the way you like and save the file.
You don't need to restart Designer, the next tiome you choose the nemueric field, it's created with the new font settings.
...
<field name="NumerischesFeld" y="0mm" x="0mm" w="67.056mm" h="9mm">
<ui>
<numericEdit>
<border>
<edge stroke="lowered"/>
</border>
<margin/>
</numericEdit>
</ui>
<!-- Changed Typeface and Size for the Value -->
<font size="12pt" typeface="Adobe Text Pro"/>
<margin topInset="1mm" bottomInset="1mm" leftInset="1mm" rightInset="1mm"/>
<para vAlign="middle"/>
<value>
<float/>
</value>
<caption reserve="30.0736mm">
<!-- Changed Typeface and Size for the Caption -->
<font size="12pt" typeface="Adobe Text Pro"/>
<para vAlign="middle"/>
<value>
<text>Numerisches Feld</text>
</value>
</caption>
</field>
...
