Sure, they're not the most popular colors, but surely someone has need of
some!
All parts (except minifig parts) in the following colors have been set to 60%
off:
Bright Light Blue
Bright Light Orange
Bright Light Yellow
Bright Pink
Dark Pink
Dark Purple
Lavender
Light Aqua
Lime
Magenta
Medium Azure
Medium Lavender
Orange
Yellowish Green
Trans-Dark Pink