L Color (Optional): Single Calendar Black, no label Single Calendar White, no label Single Calendar Green, no label Single Calendar Blue, no label Single Calendar Light Blue, no label Bi-Calendar Black, no label Bi-Calendar White, no label Bi-Calendar Green, no label Bi-Calendar Blue, no label Bi-Calendar Light Blue, no label Bi-Calendar Orange, no label Bi-Calendar Gold, no label Bi-Calendar Purple.