My colors keep on getting deleted?

So I’m animating a project, and whenever I delete certain frames and replace them with another cell, or now when I just play the animation and reach a certain point, all of my colors get deleted and are replaced with a single red color named Deleted Color. My animation remains the same colors as before, however. And then when I save and quit, the file name changes to [insert name] Would someone please help? I’ve already had to restart my animation twice because of it.

This could be due to the software running out of memory.
Keep in mind that 32-bit applications can access at most
1.6GB of system RAM.

Try splitting the project into two parts and see if the issue remains.
If it does, contact support to have a look on your system.