샘플파일 한번 올려주심이..............

플래시에서는 가능합니다.....
radioButton1.setStyleProperty("radioDot", 0xFF12AC);//라디오버튼 인스턴스네임.setStyleProperty("바꿀부분(프로퍼티)", 0xFF12AC(값))
FRadioButton.setStyleProperty

Availability

Flash Player 6.

Usage

myRadioButton.setStyleProperty(styleProperty, value)
myRadioButtonGroup.setStyleProperty(styleProperty, value)

Parameters

styleProperty A string specifying a property of the FStyleFormat object.

value The value to set for the property.

Returns

Nothing.

Description

Method; sets an FStyleFormat property for an individual radio button instance. Calling this method to specify a property overrides the setting for this property in the style format assigned to the component. Passing undefined as the value for a property removes all styles for that property.

To set FStyleFormat properties for multiple components, create a custom style format. For more information on creating custom style formats, see "Customizing component colors and text" in the "Using Components" chapter of Using Flash.

Example

The following code sets the radioDot property for to 0xFF12AC (pink).

radioButton1.setStyleProperty("radioDot", 0xFF12AC);

The following code sets the radioDot property for all the buttons in radioGroup1 to 0xFF12AC (pink).

radioGroup1.setStyleProperty("radioDot", 0xFF12AC);

동그라미 안에 것을 바꿀 수있는 방법은 없어요... 현재로서는....

style='border-color:#000000; background-color:#000000;"
이렇게 한 번 해 보세오.
해보질 않아서 모르겠습니다.

formbutton 으로 착각했슴~~~~ *^^* 지송~~~

이런건가요?
<form name="form1">
    <input type="submit" name="formbutton1" style="color:rgb(51,51,51); background-color:rgb(51,102,153); border-style:none;">
</form>