Hey there first of all welcome to wmsz, and about the color code , well currently your background color seems to be just white which in color code would be simple ( #FFFFFF ) also to check color code yourself you can use a very useful firefox addon called colorzilla made just for this purpose

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I think that your main background color is white. If you want to know the code of a color, one of the easy ways is to take a screenshot (Print-Screen) and paste the screenshot into a graphics program and use the eyedropper tool.