Well, I think I had 4.3 before and it had this pretty cool feature under ... General Blackberry forum
Help With 8700 After OS Update
Well, I think I had 4.3 before and it had this pretty cool feature under security options. It let me kind of change the background of my text messages.
Well... Funny thing happened, I upgrated to OS 4.5 and now not only am I no longer able to change the background of my text messages whenever I want, but its stuck on BLUE (the last color I had it on before upgradin to 4.5)! >_<
Please say that somone knows what I'm talkin about and can help please.
I would pick a different 4.5 and re-load my OS. This is going to be about the only way to solve your problem.
Galaxy S4 Red