Update color warnings to match other warnings (#5412)

* Update color warnings to match other warnings

Make the color deprecation warnings match the style of other warnings in tailwind

* Fix formatting

* Use log helper

Co-authored-by: Adam Wathan <adam.wathan@gmail.com>

colors.js

@@ -1,9 +1,13 @@
+const log = require('./lib/util/log').default
+
 let warned = []
 
 function warn({ version, from, to }) {
   if (!warned.includes(from)) {
-    console.log(`warn - As of Tailwind CSS ${version}, \`${from}\` has been renamed to \`${to}\`.`)
-    console.log('warn - Please update your color palette to eliminate this warning.')
+    log.warn([
+      `As of Tailwind CSS ${version}, \`${from}\` has been renamed to \`${to}\`.`,
+      'Please update your color palette to eliminate this warning.',
+    ])
     warned.push(from)
   }
 }