Change variable allocation to save code space

[Jumper]

With some creative thinking and some luck you might add an EEprom. It could be possible to solder it directly onto the PIC itself. Piggy-back the EEprom and set the i2c bus to drivven and you might even get away without adding the pullup resistors for sda and scl.

It is only 4 pins (GND, VDD, SDA, SCL) you need to connect between the PIC and the eeprom, the other pins on the EEPROM you connect either to GND or VDD (address, RW). Microchip have alot of I2C eeproms in different sizes and packages so if you just have 2 un-used pins on the pic in a suitable position this might be an option.

Then you can add alot of LED patterns and use the I2C command to load them into the RAM variables when you need to display the pattern.