Well, my only advice is stick to what the colors are typically about;
White - You've got that down
Blue - You've probably got that down, but make sure there's some mind control/heavy enchantment/knowledge themed (Think Scholar's Touch)
Black - Necromancy/Debuffing
Green - Buff/Summoning
Red - BURRRRRRRRRRRN!!!!!!!!!!
But you knew that, so i'm just being pedantic.
Other than that, you might want to specfy in Blue's Tinkerer about what happens when the Hommunculus/Hommonculi kick the bucket.
In short, keep up the good work.