How to edit colors

WED has many places where colors should be edited. To be able to easily edit colors in a same way, color button has been created. Right part of color button shows current color. Tall rectangle in middle shows value of alpha channel (shown in grayscale: from black=0 to white=255). Top three buttons in left part of button show hue, saturation and value for color. Bottom three colors show red, green and blue value for current color. Any component can be changed by LMB +mouse left/right. Click on right part of button (current color) to invoke standard windows color picker. Right click will invoke context menu that allows copy/paste operations and ability to enter numerically alpha channel.