Button Image Creation using Photoshop
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Off - Unchecked - Use a non overlapping part of the background image

Off - Checked   - Take the image from 'Off - Unchecked' and apply Menu Image/Adjustments/Curves,
                                                                  Select Channel Blue,
                                                                  Draw the marker at 0,0 upwards, which will reveal the output/input boxes
                                                                  Set output number to 150 and input number to 0

On  - Unchecked - Take the image from 'Off - Unchecked' and apply Menu Image/Adjustments/Levels,
                                                                  Set the middle input level (the value which is 1.00) to 2.40

On  - Checked   - Take the image from 'Off - Unchecked' and apply Menu Image/Adjustments/Curves,
                                                                  Select Channel Blue,
                                                                  Draw the marker at 0,0 upwards, which will reveal the output/input boxes
                                                                  Set output number to 150 and input number to 0
                                                            apply Menu Image/Adjustments/Levels,
                                                                  Set the middle input level (the value which is 1.00) to 2.40
