 class="code" href="g_i_l_0536.html" title="Gray.">gray_color_t</a>()) = 
<a name="l00136"></a>00136             detail::rgb_to_luminance&lt;typename color_element_type&lt;P2,gray_color_t&gt;::type&gt;(
<a name="l00137"></a>00137                 <a class="code" href="g_i_l_0106.html#g4b9fe0ec8239047ac50842800de872b9" title="Constant accessor to the element associated with a given color name.">get_color</a>(src,<a class="code" href="g_i_l_0618.html" title="Red.">red_t</a>()), <a class="code" href="g_i_l_0106