[Solved] NumericBox doesn't support alpha channel for foreground color(?)

[Jim]

I've been trying to theme the RadNumericBox and NumericTextBox and it seems that the alpha channel is not carried through for the text, but it is for the border.  I've been using opacity to mimic a disabled color using the following DarkTheme example:

<Color x:Key="DefaultDisabledColor">#66FFFFFF</Color>

<!--Disabled State-->
<SolidColorBrush x:Key="TelerikNumericBoxDisabledBackgroundBrush" Color="Transparent"/>
<SolidColorBrush x:Key="TelerikNumericBoxDisabledForegroundBrush" Color="{StaticResource DefaultDisabledColor}"/>
<SolidColorBrush x:Key="TelerikNumericBoxDisabledBorderBrush" Color="{StaticResource DefaultDisabledColor}"/>

In this case, the border is the greyish color I expect, but the text color remains white.  If I change DefaultDisableColor to something garish, like Fuchsia, the text and the border appear with the Fuchsia color, so that's leading me to suspect the alpha channel is somehow dropped when the text is rendered?

[Vladislav]

Hello Jim,

Thank you for your detailed report.
We confirm that this is actually the case (there is a bug in the RadNumericBox control), which prevents the alpha channel for the Foreground color to be properly applied. We will do our best to provide a fix for it in some of our future releases.

Please note that this fix will be applied in the "Telerik UI for Windows Universal" suite, since we no longer support "UI for Windows 8 XAML" one.

Your Telerik points are updated accordingly.

Regards,
Vladislav
Telerik