Different color screen flashes at course opening

Hi HeatherEmeri153​,

A brief color flash like that can sometimes appear while the course player is loading before the first slide fully renders.

One thing worth checking is the Player background color. Even if your slide background is black, the player itself has a background color that can appear briefly while the course loads. You can review this by going to Player > Colors & Effects.

You might also want to check the first slide background color or slide master to make sure it matches the player background, which can help make the transition less noticeable.

If the flash continues, it would be helpful for our team to take a closer look. You’re welcome to open a support case and share your Storyline file so we can test the behavior and see what might be causing the color to appear during load.