I think there are so many possibility's.
1) black seat cover with red white and blue triple stitching
2) black seat cover with double red stitching
3) black seat cover with double blue stitching with red CBR250 logo on seat
4) black seat cover with with white double stitiching.
all with a back stap to hold caps etc.
If you ever sell them on ebay let me know I will def buy one from you
I don't think a seat cover in white blue or red would look good though IMO