Some pallete changes are required first(I am assuming you are using the defualt pallete) add a yellow to any of the main CSets (very slightly orange)
then change one of the dark greys (not in cset 11) to a slightly lighter grey(color R33,G33,B33 Recommended) or add one 
then change the white of Cset4 to a very light blue or add it (R0,G56,B63 Recommended)

each tile uses 8-Bit and it is recommended that you use the leech option to import as such
For the purpose of importing these key blades have been modified from the intended look, for ease of use 
 
Way to dawn (2nd row) Change the grey pixels to black 
Oblivion (last row)change the purple to black 

Included key blades in order top to bottom 
1.  Kingdom key
2.  Way to dawn
3.  Crabclaw 
4.  Olympia 
5.  Three wishes
6.  Star seeker
7.  Fairy harp 
8.  Kingdom key D
9.  Oathkeeper
10. Oblivion

*Update Info* I noticed a problem with fairy harp's sprite *fixed*. And reorginized the tiles to be imported easier
 I also added graphics for the sparks from links sword for each keyblade