Unless you have a really high end monitor, with a refresh rate more the 60hz (the most common) then anything over 60 is pointless. I get quite some way over 60 and it doesn't affect me much, all the higher fps just makes lag harder to achieve.
Try mimmicking the old file structure of a texture pack before converting, I can't really remember how it went, you could always get an old texture pack, replace the terrain and items, then convert that.
Permanantly banned for recolouring A (singular) skin???? Punishment seems a bit over the top
Especially as the rules say they will just be removed, and possibly have your upload privellages removed, if you only did it once, I highly doubt you'll get perm banned. Skin submission text thingy:
Click to reveal
Do Not Upload: Skins that someone else created. Recolored or Pixel Adjustment Skins - Example: Changing eyes, adding noise, shirt color, etc. Remix Skins without Permission & Credit - Example: Using another skin as a base or using skin parts you didn't create
These skins will be removed, you'll lose all XP from them and possibly your upload privileges. Read Detailed Submission Rules - Opens in new window
Quite a while before beta 1.8, when 1.8 came it out my old toaster lost the ability to run it (looking back now it may have just been in need of an update to java) and I'd been playing it for quite a while before then, to the point I was devasted I could no longer go in my awesome massive (tiny sandstone) fortress!