Hello,
I recently upgraded one of our ASP.NET 4 applications from Q2 2014  to the latest 2017 and noticed that the background for the scale changed from gray to white (see attached) and I have not been able to find a way to change it back.  I looked within the Telerik demos and found that I'm able to change the BackColor, but it changes it for the entire RadLinearGauge tag.  Is there any way to accomplish this?
<telerik:RadLinearGauge ID="radInstalledFE" runat="server" Font-Bold="True" Font-Names="Verdana" Font-Size="10pt" Skin="Office2010Black" Width="420px" ForeColor="Black" Height="90px">                                <Pointer Shape="BarIndicator" Value="15" Size="30" Color="#5ca038">                                    <Track Opacity="0.2" Size="30" Color="Black" />                                </Pointer>                                <Scale MajorTicks-Size="10" MinorTicks-Size="5" Vertical="False" MinorTicks-Color="Black" MajorTicks-Color="Black" Labels-Color="Black" Labels-Font="Verdana" Labels-Position="Outside" MinorTicks-Visible="False"></Scale> </telerik:RadLinearGauge>
