Change the value of the transparent color
When a 24 BPP or less image strip is opened for edition, you can change the value of the color used for transparency. Read topic "What is an image strip?" to learn more about transparency in Image Strips.
Changing the value of the transparent color
1. Choose Color/Set Image Strip Background Color.
2. Select the color using the dialog box. Click OK.
3. The new transparent color has been changed.
REMARK - Once the color has been changed, there is no visual difference in the editor window. The tranparent pixels are still shown as a chessboard texture. The color will be applied when you'll save the image.