When you open a picture file in Windows Photo Viewer the default background color is white. This is just fine in most use cases. But you might find yourself in a situation where your picture is very bright or have transparent background and you might want to view it on a black or a grey toned background. Some customers ask me why they could not see the white version of their logos, and this is the reason, a white logo over white background does not display correct, the colors blend between each other (logo and background). I recommend to download and use this software to display your logos: http://www.irfanview.com/ 1. Open IrfanView 2. Press key "p" (For the settings dialog) 3. Click on the tab "Viewing" 4. Then you can change the main window color (Click on the "Choose" button). Open the picture again (See example image "Readme RFAN VIEW.jpg") This way you can display your logos over any color you want. Question: Why transparent background? Answer: because this way you can use it or print it over any color you want Question: Why bw-sample.jpg image in the zip file displays correct? Answer: because that demo file has not transparent background, that's only a demo demostrating the use over white or black backgrounds. ACROBAT READER: (See example image "Readme PDF.jpg") 1) Open Adobe Reader. Go to Edit - Preferences - Accessibility. 2) Make sure the "Replace Document Colors" is checked and click on Custom Color. 3) Click "Page Background" color and then select "other color." Here's my custom neutral color settings: If you have any questions let me know :) Remember...if you want to print your logo please check the vector extra gig for best quality. https://www.fiverr.com/kickgom/create-your-name-or-text-with-fireworks-looking--3?funnel=2014101808405303913439780 regards