The value (0 to 255) of the blue component of a shape's color.
<shape>
The following displays the value of colorred in a text stimulus:
<text sometext>
/ items= ("colorred = <% shape.circle.colorred %>")
</text>
The following displays the value of colorred in an instruction page:
<page somepage>
colorred = <% shape.circle.colorred %>
</page>