RGB Led lighting design help? Answered

I have a project that uses a programable RGB Led flex light strip in a tube , I have been able to install that with no problem. What I need is at the end of the tube I would like to have the light project outward from the end , the problem is the flex strip can not be bent to go around the inside diameter of the tube which is about 2 1/2 inches. I was thinking if I could find a circular PCB that I could install RGB Leds into and then fit that into the end , this would fix  my problem. Any other suggestion would be helpful.
Thank You!

David Ciciotti