Change copy from 'Use colorpicker' to 'Use color'. Better hint. (#590)

code/html/index.html

@@ -377,11 +377,11 @@
                             <fieldset>
 
                                 <div class="pure-g">
-                                    <label class="pure-u-1 pure-u-lg-1-4">Use colorpicker</label>
+                                    <label class="pure-u-1 pure-u-lg-1-4">Use color</label>
                                     <div class="pure-u-1 pure-u-lg-1-4"><input type="checkbox" name="useColor" action="reload" tabindex="8" /></div>
                                     <div class="pure-u-0 pure-u-lg-1-2"></div>
                                     <div class="pure-u-0 pure-u-lg-1-4"></div>
-                                    <div class="pure-u-1 pure-u-lg-3-4 hint">Use color picker for the first 3 channels as RGB.<br />Will only work if the device has at least 3 dimmable channels.<br />Reload the page to update the web interface.</div>
+                                    <div class="pure-u-1 pure-u-lg-3-4 hint">Use the first three channels as RGB channels. This will also enable the color picker in the web UI. Will only work if the device has at least 3 dimmable channels.<br />Reload the page to update the web interface.</div>
                                 </div>
 
                                 <div class="pure-g">