Wall of text up there is hard to parse in that form, here's what I've got:
No it only has one drive which is now out of the computer-we are trying to copy all his stuff onto the green drive in case the worst happens.
I don't want to clone.
1 - I want to copy the time machine images off the original system drive to the green drive
2 - then boot up without the original drive
3 - restore the backup that's on the green drive to the purple drive
4 - then boot up from DVD
5 - use time machine to restore the image that we copied on the green drive to the purple drive(which will later become his storage disk)
6 - then boot up from the purple drive and take all his valuable data(like his photos(he has a high end cam) and move it to the green HD.
7 - Boot from purple
8 - Once in OS X run disk utility and shrink purple's primary(system) partition to 430GB
9 - use Time Machine to back up just that partiton and save it to green.
10 - Then connect the SSD and boot up from dvd (without purple) into disk utility and run time machine and restore the backup we just made from the 430GB purple partiton to the SSD.
11 - Reboot this time from SSD to see if all is right.
12 - If it boots up and apps work then I think that it is safe to say that it worked and he can now erase the purple drive and make it his storage drive.
1 - Copy Time Machine -> WD_Green Drive (Cloning works best for this, it's bit for bit)
2 - How, with the WD_Purple? Is OS X installed on this drive?
3 - Restore from backup on WD_Green -> WD_Purple?
4 - Boot from DVD (What drive is in the computer at this point?)
5 - Time Machine doesn't work that way
6 - Wait, what? The data was on WD_Green, you moved it to WD_Purple, and now you're moving it back to WD_Green??
7 - See 6, you're already booted on WD_Purple.
8 - Not necessary, but ok.
9 - Time Machine doesn't work that way
10 - Time Machine doesn't work that way
11 - Too many steps
12 - That's correct, if things work then the process worked, but I don't think this process is going to work the way you think it is.
If your concern is that the existing internal drive* is about to hardware fail, then cloning it to the WD_Green is the most expeditious way of removing it from the equation.
*Is the 1TB internal his boot drive AND his Time Machine drive? That defeats the entire purpose of Time Machine.
Some things to know before you start:
A: Time Machine is NOT bootable. You can restore from a Time Machine, but that happens AFTER you re-install OS X.
B: There is NOTHING like Time Machine in Windows. Nothing. There's Shadow Volume Something, but that's not exactly the same.
C: I still feel like you're making this more complicated than it has to be, far too many steps.
Here's the plan that will work:
1 - Pull existing drive
1a - If Time Machine is on this drive, clone it NOW to another physical drive.
2 - Install SSD
3 - Install OS X to SSD
4 - Restore SSD from Time Machine
No need to fiddle with partitions or juggle multiple drives back and forth with green and purple and backing up and jibber jabber.