Items
Wooden Tools - Now look more like wood planks.
Stone Tools - Now look more like stone.
Iron Sword - Made the guard the same color as the blade.
Gold Tools - Color is now more like a gold ingot.
Diamond Tools - Color is now more like a diamond, which is a slight change in brightness.
Leather Armor - Changed to look blocky and dying it will fully color it.
Chain Armor - Changed to look blocky.
Iron Armor - Changed to look blocky and more like a iron ingot.
Gold Armor - Changed to look blocky and more like a gold ingot.
Diamond Armor - Changed to look blocky and more like a diamond.
Chorus Fruit - Now the same color as chorus plants.
Popped Chorus Fruit - Brighter version of chorus plants.
Bread - Now is a slice of bread.
Pumpkin Pie - No longer has a slice missing.
Apple - Has a leaf on the stem.
Golden Apple - Also has a leaf on the stem.
Map - Looks like the map.
Written Map - Looks like the map and has the typical drawings of a landscape.

Blocks
Eye of Ender / End Portal Frame with Eye - Color is now purple instead of green because science.
Lantern - The animation now fades.

Custom Items (These Require Optifine)
Spruce Tools, Birch Tools, Jungle Tools, Acacia Tools, Dark Oak Tools - Rename the Wooden part to which ever type of wood you want Ex. Dark Oak Sword (Caps Matter).
Mundane Potion - Changed to a whitish blue.
Awkward Potion - Changed to a Red.
Thick Potion - Changed to a darker blue.