John,

Here is what they have given.

1.  Create a new json file ( I created theme-reports.json)

2.  For cross tab datawindow,  json like below  [ dw_1 is cross tab report ]

"w_window.dw_1":
{
"drawing":true,
"background-color-enabled":true,
"background-color":"#FFFFFF",
"cross-style":
{
"drawing":true,
"head-band":
{
"background-color":"#FFFFFF",
"dwo-text-font":{"color":"#000000"}
}
}
}

2.  For tabular datawindow, json be like this [ dw_2 is tabular datawindow ]

"w_window.dw_2":
{
"drawing":true,
"background-color-enabled":true,
"background-color":"#FFFFFF"
}

Full contents of the theme-reports.json file

{
"meta-info":
{
"version":"190"
},
"w_window.dw_1":
{
"drawing":true,
"background-color-enabled":true,
"background-color":"#FFFFFF",
"cross-style":
{
"drawing":true,
"head-band":
{
"background-color":"#FFFFFF",
"dwo-text-font":{"color":"#000000"}
}
}
},
"w_window.dw_2":
{
"drawing":true,
"background-color-enabled":true,
"background-color":"#FFFFFF"
}
}

It's working in my place perfectly.   Still to check it at client places.

Thanks Ken,

It was a typo, my original file didn't have the comma.  Nevertheless I'm sending the json file here.  Tried with various combo that came to my mind.   Blue colour in the cross tab datawindow didn't go off. 

1.  Background color expression for header band set to white
2.  All fields' background color (in datawindow expression) set to white.
3.  Background color expression for datawindow is also set to white

Anything that I'm missing or doing what should not be done...

Happiness Always
BKR Sivaprakash

Note:  As I could not upload the json file, here is the content

{
"meta-info":
{
"version":"190"
},
"w_rep_veh_sales_monthwise.tab_1.tabpage_1.dw_report":
{
"drawing":true,
"background-color-enabled":true,
"background-color":"#FFFFFF"
}
}

Hi Sivaprakash,

The theme-reports.json you used didn’t take effect because there is an extra comma at the end of "background-color":"#FFFFFF",. I suggest that you delete this comma and try again.

Regards,

Ken

Tried with the following:

1.  Tried with modify expression [  Tabular datawindow ]
        tab_1.tabpage_2.dw_report.Modify("Datawindow.Color = '" + String(RGB(255,255,255)) + "'") 
        All bands Background color changed to White [ in datawindow design mode ]
        All fields Background color set to Transparant [ in datawindow design mode ]

       We have the gray color [ set in Theme file for datawindow background color ] at the bottom of the report in the last page.   Why ?   What should we do to change it to white ?

2.  Similar issue with Cross Tab data window.  Here we get Blue background for header band.   Don't know from where we get this color.   Similar settings that we do for Tabular, modifying every band with white and every field with transparant, done here for cross tab also.  Still we get the blue color.   How to change it to white?  

This issue is when the datawindow is NOT IN preview mode.   In preview mode everything looks in white.

The solution should lie either in Custom Theme file or by setting expression coloum for every band and every column.  Either of the one should work to set the color properly. IMO.

Happiness Always
BKR Sivaprakash