U can try to copy with Dvddecrypter (from www.dvddecrypter.com).
U didnt get any colors, so i think that somehow the ps2 got toc-refreshed when u where swappin (somehow a real eject was done).
When u swap right and the ps2 dosnt like the dvd/cd-media u usually get colors too.
It might be the pnp no-solder modchip (donno how it works).
U can try this, just to see if your ps2 likes your dvd+-r/cd-r media:
PSP 1.52 (DG), DS 001, XBOX v1.6B+Cheapmod+120GBHD, SM33, 50004+HDA10+120GBHD, SM32, BP11, 3900X, XBOX v1.6+Softmod, P4_2.666, GBASP, GBA,Celeron_700, DC, PS1, P2_300, TI85, Saturn, GBC, GBP, Megadrive, P75, Amiga 500, MS, 486SX25, Amstrad CPC464, ZX81