There are many ways to play with this color filter, I will show some of feature that this little color filter can perform to your photo.
2. Place in front of Flash : The colors will splash on the object that has flash light on it
3. Place 2 colors filter on the lens :
4. Place 2 colors filter on the flash :
5. Place half filter over the lens
6. Use Color-Filter with Color Swap function from Digital camera (Canon in this study case)
How to :
1. choose the 1st color from the color filter (purple)
2. choose the 2nd color from anything from the scene (yellow)
3. place the 1st color filter over the lens. Then SHOOT! just that simple.