These are not unheard of, but are very scarce versions of Spiderweb. I have seen versions in blue (I own a celery vase), yellow and green. I assume there is also a deep pink variant as well. At some stage you may also come across Spiderweb with unusual decorations, like coloured stars. There is even an orange crinkle-banded model (Anne on this board has it). These are just one of the new finds, which will be explored in Chance Additions.
These smooth coloured banded versions might also be linked to the standard decorations seen on Cato, so coming right at the end of Chance's pressed glass production.
As with your Waverley plates, another excellent find!