Is there any way to set background of images returned by google charts

Is the开发者_开发百科re any way to make the background of the google charts transparent. Google charts.

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Here is an excerpt from the google documentation on google chart API.

Specify colors using a 6-character string of hexadecimal values, plus two optional transparency values, in the format RRGGBB[AA].

For example:

• FF0000 = Red
• 00FF00 = Green
• 0000FF = Blue
• 000000 = Black
• FFFFFF = White

AA is an optional transparency value, where 00 is completely transparent and FF is completely opaque. For example:

• 0000FFFF = Solid blue
• 0000FF66 = Transparent blue