visual difference between a fire and pastel?

Since Im quite new to this I dont see the difference between the two visually anyway.I heard some say they have blushing. To me blushing means a pink cast which im not seeing in my fire.

Here's a video of Justin Kobylka explaining the Fire morph:
https://www.youtube.com/watch?v=JJYfI_komGc

and...

... Here's a video of Justin Kobylka explaining the Pastel morph:
https://www.youtube.com/watch?v=EXUgMgYxnF0

Here I was getting all ready to go on and on in text trying to explain... but seems eric has the two perfect videos for you. Hah. :P