This tip will allow you to use the plastic colored gels that come with your Diana flash to bring color to your 35mm Diana F+ shots.
For this tip you will need 2 plastic color gels from your Diana+ flash kit (I chose red and blue for this experiment, but you could use any colors you want) and scotch/cello tape.
I started with the square 35mm mask with perforations because it was the mask that would most easily fit the plastic color gels. After choosing which colors I wanted to use, I grabbed my tape and cut a small piece (about 1/2cm long), so that I could tape the 2 filters together. I did this by placing half of the piece of tape on the 2 gels together and the other was left to hang off so that I could stick it to the inside of the camera. While taping the gels together I decided to leave a small gap between them, so that the natural light and color of what I was shooting would come through.
Once I had both sides of the 2 gels taped to the inside of the camera, I loaded my 35mm film and shot away.
While I realize this is a fairly simple tip to try I think it has produced some pretty cool results. I hope you will try this tip and use some creativity in choosing your colored gels.